US 20010049683 A1 Abstract A data calculator for calculating a data structure is provided, which can easily cope with a change of an existing data structure. The calculator comprises a data structure network storage section in which already generated data structures, a calculation method used for generating each data structure based on other data structures, and said other data structures are stored in a format by which dependence relationships between these stored data are detectable; and a managing section. When revision of an existing data structure (or revision of a cell value or a frame), or of an existing calculation method is directed, then the managing section revises a target data and also revises data structures which depend on revised data with reference to the data structure network storage section.
Claims(5) 1. A data calculator comprising:
a data structure network storage section in which one or more already generated data structures, a calculation method used for generating each data structure based on one or more other data structures, and said one or more other data structures are stored in a format by which dependence relationships between these stored data are detectable; and a managing section, wherein when a calculation method is input which indicates the generation of a new data structure based on one or more already generated data structures, the managing section generates a new data structure based on the above calculation method and one or more already generated data structures stored in the data structure network storage section, and stores the generated new data structure and the above-mentioned calculation method into the data structure network storage section in a format in which dependence relationships between the newly stored data structure and calculation method, and the already-stored data structures and calculation method are detectable; when revision of the calculation method is directed, the managing section revises the calculation method which is stored in the data structure network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the calculation method for which revision was directed, based on the data structures and calculation method stored in the data structure network storage section; and when revision of a cell value or a frame of the already generated data structure is directed, the managing section revises the data structure which is stored in the data structure network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the data structure for which revision was directed, based on the data structures and calculation method stored in the data structure network storage section. 2. A data calculator as claimed in claim 1 wherein when a new data structure is generated or an already- generated data structure is revised, if values of one or more cells on the data structure are necessary, then the managing section makes the calculation section calculate the values of the cells on the data structure. 3. A data calculator comprising:
a data structure cell network storage section in which one or more already generated data structures, a calculation method used for generating each data structure based on one or more other data structures, said one or more other data structures, a cell pattern indicating each cell which was set using a value of another cell in the same data structure, a calculation method used for calculating a value of the cell indicated by the cell pattern are stored in a format by which dependence relationships between these stored data are detectable; and a managing section, wherein when a calculation method is input which indicates the generation of a new data structure based on one or more already generated data structures, the managing section generates a new data structure based on the above calculation method and one or more already generated data structures stored in the data structure cell network storage section, and stores the generated new data structure and the above calculation method into the data structure cell network storage section in a format in which dependence relationships between the newly stored data structure and calculation method, and the already-stored data structures and calculation method are detectable; when revision of the calculation method is directed, the managing section revises the calculation method which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the calculation method for which revision was directed, based on the data structures and calculation method stored in the data structure cell network storage section; when revision of a cell value or a frame of the already generated data structure is directed, the managing section revises the data structure which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the data structure for which revision was directed, based on the data structures and calculation method stored in the data structure cell network storage section; when a cell pattern indicating a cell of a data structure and a calculation method for calculating a value of the cell indicated by the cell pattern are input, the managing section performs the calculation of the value of the cell indicated by the cell pattern according to the above calculation method, and sets the relevant cell in the data structure to the calculated value, and the managing section stores the cell pattern and the calculation method in a format in which dependence relationships between the newly stored cell pattern and calculation method, and the already-stored data structures, cell pattern, and calculation method are detectable; and when revision of a value of a cell in the already generated data structure is directed, the managing section revises the value of the cell which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises the value of each cell indicated by each cell pattern which depends on a calculation method relating to the above direction of revision. 4. A storage medium storing a computer program for making a computer function as a managing section, the computer comprising a data structure network storage section in which one or more already generated data structures, a calculation method used for generating each data structure based on one or more other data structures, and said one or more other data structures are stored in a format by which dependence relationships between these stored data are detectable, and the managing section having the following functions:
when a calculation method is input which indicates the generation of a new data structure based on one or more already generated data structures, the managing section generates a new data structure based on the above calculation method and one or more already generated data structures stored in the data structure network storage section, and stores the generated new data structure and the above calculation method into the data structure network storage section in a format in which dependence relationships between the newly stored data structure and calculation method, and the already-stored data structures and calculation method are detectable; when revision of the calculation method is directed, the managing section revises the calculation method which is stored in the data structure network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the calculation method for which revision was directed, based on the data structures and calculation method stored in the data structure network storage section; and when revision of a cell value or a frame of the already generated data structure is directed, the managing section revises the data structure which is stored in the data structure network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the data structure for which revision was directed, based on the data structures and calculation method stored in the data structure network storage section. 5. A storage medium storing a computer program for making a computer function as a managing section, the computer comprising a data structure cell network storage section in which one or more already generated ata structures, a calculation method used for generating each data structure based on one or more other data structures, said one or more other data structures, a cell pattern indicating each cell which was set using a value of another cell in the same data structure, a calculation method used for calculating a value of the cell indicated by the cell pattern are stored in a format by which dependence relationships between these stored data are detectable, and the managing section having the following functions:
when a calculation method is input which indicates the generation of a new data structure based on one or more already generated data structures, the managing section generates a new data structure based on the above calculation method and one or more already generated data structures stored in the data structure cell network storage section, and stores the generated new data structure and the above calculation method into the data structure cell network storage section in a format in which dependence relationships between the newly stored data structure and calculation method, and the already-stored data structures and calculation method are detectable; when revision of the calculation method is directed, the managing section revises the calculation method which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the calculation method for which revision was directed, based on the data structures and calculation method stored in the data structure cell network storage section; when revision of a cell value or a frame of the already generated data structure is directed, the managing section revises the data structure which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the data structure for which revision was directed, based on the data structures and calculation method stored in the data structure cell network storage section; when a cell pattern indicating a cell of a data structure and a calculation method for calculating a value of the cell indicated by the cell pattern are input, the managing section performs calculation of the value of the cell indicated by the cell pattern according to the above calculation method, and sets the relevant cell in the data structure to the calculated value, and the managing section stores the cell pattern and the calculation method in a format in which dependence relationships between the newly stored cell pattern and calculation method, and the already-stored data structures, cell pattern, and calculation method are detectable; and when revision of a value of a cell in the already generated data structure is directed, the managing section revises the value of the cell which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises the value of each cell indicated by each cell pattern which depends on a calculation method relating to the above direction of revision. Description [0001] 1. Field of the Invention [0002] The present invention relates to a technique for inputting a plurality of data and a method for calculating these data into a data structure as a table, and outputting calculated results. [0003] This application is based on Patent Application No. Hei 9-194821 filed in Japan, the contents of which are incorporated herein by reference. [0004] 2. Description of the Related Art [0005] Conventional data calculators can be classified into two types: a spread-sheet type in which a working table is managed so as to maintain dependence relationships between data by editing the values of cells in the table and by editing a method for calculating values of the cells based on positional information of the cells, and a non-limited processing type in which calculation of data structures is possible by editing the data structures and inputting a calculation method but dependence relationships are not maintained. [0006] The former spread-sheet type calculator comprises a cell data editing section for realizing input, display, and revising operations of a working table and values of the cells in the working table; a calculation method editing section for realizing input, display, and revising operations of a method for performing a calculation between cells by using positional information of the cells; a managing section for managing a cell network in which the cells are regarded as nodes and the calculation method is regarded as an ark, and for maintaining dependence relationships between data structures as inputs or outputs of calculation; and a calculating section for performing calculations between the cells. [0007] When cell data and a calculation method are respectively provided from the cell data editing section and the calculation method editing section to the managing section, the managing section calculates the data of a cell as an output of a calculation according to the calculation method by using the newest data of a cell as an input of the calculation, and displays a calculated result via the cell data editing section. [0008]FIG. 17 is a block diagram showing a structural example of conventional spread-sheet type data calculator [0009] The cell data editing section [0010] When a change of cell data is communicated (see arrow [0011] In calculating section [0012] The calculation method editing section [0013] In this way, managing section [0014] In calculating section [0015]FIG. 18 is a diagram showing an example of the display screen in the conventional spread-sheet type data calculator as shown in FIG. 17. This example relates to two branch offices (Tokyo and Osaka) of a company and shows results of calculations in which regarding, sales volume per an employee is calculated for each branch office based on data relating to the sales volume and the number of employees in both branch offices for the present and previous year. [0016] In the display screen as shown in FIG. 18, selected cell display label [0017] The working table [0018] The index indicating coordinate values of selected cell [0019] Here, the formula “=D [0020] In the spread-sheet type calculator, in order to maintain dependence relationships based on the designated calculation methods, when the value of a cell is changed, the values of other cells in a dependence relationship with the changed cell are automatically recalculated and changed. For example, in the case shown in FIG. 18, when the value of cell D [0021] On the other hand, the non-restricted processing type calculator consists of a data structure editing section for realizing input, display, and revising operations with respect to a data structure such as a list, table, graph, or the like; a calculation method input section for realizing an input operation of a method for calculating a new data structure based on the existing data structure; a managing section for managing a list of data structures; and a calculating section for performing a calculation relating to a relevant data structure. If cell data or a calculation method is provided from the data structure editing section or the calculation method editing section to the managing section, a data structure is calculated via the calculating section according to the present data structure and calculation method, and a calculated result is displayed by the data structure editing section. [0022]FIG. 19 is a block diagram showing an example of the conventional nonrestricted processing type data calculator ( [0023] The data structure editing section [0024] When the managing section [0025] A calculation method for calculating a new data structure from the data structure which was already established is input via the calculation method input section [0026] In the calculating section [0027]FIG. 20 is a diagram showing an example of the display screen in data calculator [0028] The display screen as shown in FIG. 20 includes parts such as menu [0029] The user made a new table [0030] In the above-described conventional spread-sheet type data calculator, a relationship between plural data can be indicated only based on positional relationships of the cells in the working table. Therefore, it is difficult to indicate complicated relationships between various data. This problem will be explained in detail with reference to an example shown in FIG. 21. [0031]FIG. 21 shows an example of the display screen in the spread-sheet type data calculator shown in FIG. 17, as the example shown in FIG. 18. In the example of FIG. 21, summary table [0032] In the spread-sheet type data calculator, the dependence relationships are maintained based on the used calculation methods of the cells. Therefore, when the value of a cell is changed, the values of other cells which must also be changed are automatically changed. For example, in FIG. 18, if the value of the sales volume of the previous year for the Tokyo branch office (i.e., cell C [0033] Additionally, in the conventional spread-sheet type data calculator, as shown in FIG. 18, three tables such as “SALES VOLUME” table [0034] As explained above, in the conventional spread-sheet type data calculator, no method other than the method in which formulas are determined based on positional relationships between the cells in the working table can be used; thus, it is difficult to calculate a new table from existing tables when the new table has no corresponding positional relationship with the existing tables. Additionally, it is inconvenient when it is necessary to calculate many tables and to separately display or print the tables, and a big revision is necessary when a data structure itself must be changed. [0035] On the other hand, as the conventional non-restricted processing type data calculator has no structure for maintaining dependence relationships based on cells or calculation methods of the table, the table as calculated results must be recalculated according to a change of the value of a cell in which original data is stored or a change of the structure of the table. For example, when the sales volume of the previous year for the Tokyo branch office is changed in the example shown in FIG. 20, table [0036] In consideration of the above circumstances, the present invention has an objective to easily generate a new data structure based on various exiting data structures, and to easily cope with a change of an existing data structure. [0037] Therefore, the present invention provides a data calculator comprising: [0038] a data structure network storage section in which one or more already generated data structures, a calculation method used for generating each data structure based on one or more other data structures, and said one or more other data structures are stored in a format by which dependence relationships between these stored data are detectable; and a managing section, [0039] wherein when a calculation method is input which indicates the generation of a new data structure based on one or more already generated data structures, the managing section generates a new data structure based on the above calculation method and one or more already generated data structures stored in the data structure network storage section, and stores the generated new data structure and the above-mentioned calculation method into the data structure network storage section in a format in which dependence relationships between the newly stored data structure and calculation method, and the already-stored data structures and calculation method are detectable; [0040] when revision of the calculation method is directed, the managing section revises the calculation method which is stored in the data structure network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the calculation method for which revision was directed, based on the data structures and calculation method stored in the data structure network storage section; and [0041] when revision of a cell value or a frame of the already generated data structure is directed, the managing section revises the data structure which is stored in the data structure network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the data structure for which revision was directed, based on the data structures and calculation method stored in the data structure network storage section. [0042] According to the above structure, it is possible to easily generate a new data structure based on various exiting data structures, and to easily cope with a change of an existing data structure. [0043] In order to easily calculate a value of a cell by using another cell in the same data structure, the present invention also provides a data calculator comprising: [0044] a data structure cell network storage section in which one or more already generated data structures, a calculation method used for generating each data structure based on one or more other data structures, said one or more other data structures, a cell pattern indicating each cell which was set using a value of another cell in the same data structure, a calculation method used for calculating a value of the cell indicated by the cell pattern are stored in a format by which dependence relationships between these stored data are detectable; and a managing section, [0045] wherein when a calculation method is input which indicates the generation of a new data structure based on one or more already generated data structures, the managing section generates a new data structure based on the above calculation method and one or more already generated data structures stored in the data structure cell network storage section, and stores the generated new data structure and the above calculation method into the data structure cell network storage section in a format in which dependence relationships between the newly stored data structure and calculation method, and the already-stored data structures and calculation method are detectable; [0046] when revision of the calculation method is directed, the managing section revises the calculation method which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the calculation method for which revision was directed, based on the data structures and calculation method stored in the data structure cell network storage section; [0047] when revision of a cell value or a frame of the already generated data structure is directed, the managing section revises the data structure which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises all data structures, which depend on the data structure for which revision was directed, based on the data structures and calculation method stored in the data structure cell network storage section; [0048] when a cell pattern indicating a cell of a data structure and a calculation method for calculating a value of the cell indicated by the cell pattern are input, the managing section performs the calculation of the value of the cell indicated by the cell pattern according to the above calculation method, and sets the relevant cell in the data structure to the calculated value, and the managing section stores the cell pattern and the calculation method in a format in which dependence relationships between the newly stored cell pattern and calculation method, and the already-stored data structures, cell pattern, and calculation method are detectable; and [0049] when revision of a value of a cell in the already generated data structure is directed, the managing section revises the value of the cell which is stored in the data structure cell network storage section and for which revision was directed, and the managing section also revises the value of each cell indicated by each cell pattern which depends on a calculation method relating to the above direction of revision. [0050] According to the above structure, it is possible to easily calculate a value of a cell in the data structure. [0051] In addition, the present invention also provides storage media storing computer programs for making a computer function as the above-mentioned managing sections. [0052]FIG. 1 is a block diagram of the first embodiment according to the present invention. [0053]FIG. 2 is a flowchart showing an operational example of data structure editing section [0054]FIG. 3 is a flowchart showing an operational example of calculation method editing section [0055]FIG. 4 is a flowchart showing an operational example of managing section [0056]FIG. 5 is a flowchart showing an updating process performed by managing section [0057]FIG. 6A is a diagram showing a structural example of data structure network storage section [0058]FIG. 7 is a diagram showing an example of the display screen of display section [0059]FIG. 8 is a block diagram of another embodiment according to the present invention. [0060]FIG. 9 is a flowchart showing an operational example of data structure cell editing section [0061]FIG. 10 is a flowchart showing an operational example of calculation method editing section [0062]FIG. 11 is a flowchart showing an operational example of managing section [0063]FIG. 12 is a flowchart showing an updating process performed by managing section [0064]FIG. 13A is a diagram showing a structural example of data structure cell network storage section [0065]FIG. 14 is a diagram showing an example of the display screen of display section [0066]FIG. 15 is a diagram showing another example of the display screen of display section [0067]FIG. 16 is a block diagram showing a hardware structure of the data calculators shown in FIGS. 1 and 8. [0068]FIG. 17 is a block diagram showing a structural example of conventional spread-sheet type data calculator [0069]FIG. 18 is a diagram showing an example of the display screen in data calculator [0070]FIG. 19 is a block diagram showing an example of conventional non-restricted processing type data calculator [0071]FIG. 20 is a diagram showing an example of the display screen in data calculator [0072]FIG. 21 is a diagram for explaining a problem of the conventional spread-sheet type data calculator [0073] The embodiments of the present invention will be explained in detail with reference to the drawings. [0074]FIG. 1 is a block diagram of data calculator [0075] The data structure editing section [0076] (i) when a user intends to input a new data structure as a list, table, graph, or the like, via input section [0077] (ii) when a user intends to revise a data structure via input section [0078] (iii) when change information is transferred from managing section [0079] The calculation method editing section [0080] (i) when a user inputs a calculation method for generating a new data structure and a name of the new data structure via input section [0081] (ii) when a user revises the calculation method which was already input via input section [0082] In the data structure network storage section [0083] The calculating section [0084] The managing section [0085]FIG. 2 is a flowchart showing an operational example of data structure editing section [0086] The display screen shown in FIG. 7, as in the examples shown in FIGS. [0087] The display screen as shown in FIG. 7 includes parts such as menu [0088] First, a user inputs list [0089] When list [0090] When the managing section [0091] After that, the user inputs list [0092] The user then selects “MAKE NEW TABLE” in menu [0093] When the calculation method editing section [0094] When the managing section [0095] After that, the managing section [0096] Operations performed in this updating process of step S [0097] First, with reference to the data structure network, a calculation method and data structures used for making table [0098] After that, the managing section [0099] The managing section [0100] When the above change information ( [0101] The managing section [0102] After the user makes table [0103] Accordingly, operations similar to those explained above are performed. As a result, calculation method “=TABLE [BRANCH+“TOTAL”, YEAR+“TOTAL”]” B is stored into data structure network storage section [0104] After that, the user selects “CHANGE DATA STRUCTURE” in menu [0105] When the values of the cells of table [0106] When the managing section [0107] After the user inputs the value of each cell of table [0108] Lastly, the user selects “MAKE NEW TABLE” again in menu [0109] When it is directed that table [0110] When the managing section [0111] The managing section [0112] In the updating process in step S [0113] The managing section [0114] After that, managing section [0115] When the data structure editing section [0116] The managing section [0117] According to the above operations, table [0118] After that, if it is necessary to add a new item of Nagoya branch office to table [0119] When “NAGOYA” is added to list [0120] When the managing section [0121] After that, the managing section [0122] The managing section [0123] On the other hand, while the screen as shown in FIG. 7 is displayed in display section [0124] When the calculation method editing section [0125] In this way, the managing section [0126] On the other hand, if the user hopes to finish the processing of the data calculator, the user inputs a finish command using input section [0127] In the present embodiment, each data structure is managed using a format of the multi-window system; thus, it is convenient when it is necessary to calculate multiple data structures and to respectively display or print the plural data. On the other hand, similar to ordinary multi-window systems, the present system has functions such as changing of a window size, transforming a window into an icon, and moving a window. Therefore, it is possible to arrange and display only the desired data structures in an easily observed format. [0128] Additionally, in the present embodiment, not only the following operation is possible in which if the value of any cell of tables [0129] As explained above, the present system has functions of designation of each calculation method between data structures and of recalculation based on dependence relationships of the data structures, by which complex relationships between various kinds of data can be represented and it is possible to easily cope with a change of the data structure. [0130]FIG. 8 is a block diagram showing another embodiment of the data calculator ( [0131] The data structure cell editing section [0132] (i) when a user indicates the input of a new data structure such as a list, table, or a graph by using input section [0133] (ii) when a user indicates revision of a target data structure by using input section [0134] (iii) when a user indicates revision of a target cell by using input section [0135] (iv) when change information (see arrow [0136] The calculation method editing section [0137] (i) when a user inputs a calculation method for generating a new data structure and a name of the data structure to be newly generated by using input section [0138] (ii) when a user revises the calculation method, which was already input so as to generate the data structure which was also already input (see arrow [0139] (iii) when a user inputs a cell pattern indicating a cell to be set to a value, a calculation method for calculating the value of the cell indicated by the cell pattern, and the name of the data structure in which the cell indicated by the above cell pattern exists (see arrow [0140] (iv) when a user revises the calculation method, which was already input so as to calculate the value of each cell, by using input section [0141] In the data structure cell network storage section [0142] The calculating section [0143] The managing section [0144]FIG. 9 is a flowchart showing an operational example of data structure cell editing section [0145] The display screen shown in FIG. 14 shows data for two branch offices of a company and shows results of calculations in which table [0146] The display screen as shown in FIG. 14 includes, as in the display screen of FIG. 7, parts such as a menu for selecting the kind of method for calculating data structures, a name entry for designating a name of a new data structure, a calculation method entry for inputting details of the relevant calculation method, and each data structure [0147] A user first inputs list [0148] When the list [0149] When the managing section [0150] After that, the user inputs list [0151] The user then selects “MAKE NEW TABLE” in the menu, provides a name “SALES VOLUME” of table [0152] When the calculation method editing section [0153] When the managing section [0154] After that, managing section [0155] Operations performed in the updating process of step S [0156] First, a calculation method and data structures used for generating table [0157] After that, managing section [0158] The managing section [0159] When the data structure cell editing section [0160] After that, managing section [0161] After making table [0162] In this way, operations similar to those explained above are performed. As a result, calculation method “TABLE [BRANCH+“TOTAL”, YEAR+“TOTAL”]” E is stored into the data structure cell network storage section [0163] After that, the user selects “CHANGE DATA STRUCTURE” in the menu, provides name “SALES VOLUME” of table [0164] When the value of each cell of table [0165] When the managing section [0166] After the user inputs values of cells of each year in each branch office in table [0167] After that, the user selects “SALES VOLUME”, the name of table [0168] In this way, calculation method editing section [0169] When managing section [0170] After that, managing section [0171] The managing section [0172] After that, managing section [0173] The user then selects “SALES VOLUME”, the name of table [0174] After that, the user similarly directs that in table [0175] After all cells of tables [0176] In this way, operations similar to those explained above are performed, and the above calculation method “=TABLE [YEAR×[BRANCH+“TOTAL”], “SALES VOLUME”+“NUMBER OF EMPLOYEES”+“VOLUME/EMPLOYEES”]” T is stored into data structure cell network storage section [0177] After that, the user sets data structure menu [0178] After that, the user selects name “SUMMARY TABLE”, the name of table [0179] Lastly, the user selects “SUMMARY TABLE”, the name of table [0180] Accordingly, operations similar to those explained above are performed, and each cell of the last line in table [0181] According to the above operations, table [0182] If another item such as the Nagoya branch office should be added to table [0183] When “NAGOYA” is added to list [0184] When the managing section [0185] After that, the managing section [0186] The managing section [0187] In addition, regarding the display situation as shown in FIG. 14, if the user revises the value of a cell in table [0188] In this way, managing section [0189] In this embodiment, as in the first embodiment, each data structure is managed according to a multi-window system; thus, it is convenient when various data structures are calculated and are respectively displayed and printed. Additionally, as shown in an ordinary multi-window system, functions such as changing a window size, transforming a window into an icon, and moving a window are provided; thus, it is possible to arrange only the necessary tables so that they are clearly shown. [0190] Also in the present embodiment, as in the first embodiment, not only the following operation is possible in which if the value of any cell of tables [0191] Therefore, there occurs an effect in that revision by a user is unnecessary in this case. [0192] On the other hand, in the conventional spread-sheet type data calculators, calculations between varied data structures are difficult because it is difficult to represent such varied structures using only positional relationships between the cells. However, in the present embodiment, such calculations can easily be performed. [0193]FIG. 15 is a diagram showing a display screen example (as shown in FIG. 14) relating to the embodiment shown in FIG. 8. Hereinbelow, using the display screen example of FIG. 15, various methods in use and various effects relating to the embodiment will be explained. [0194] In the display screen in FIG. 15, various data structures are calculated based on summary table [0195] In the above formula, pattern variable “?” matches the row header of any cell having value “3” in the column of header “AGE”. The list [0196] The “AGE” table [0197] Also in the “AGE” table [0198] (i) having the same column header (i.e., any one of “NAME”, “HEIGHT”, and “WEIGHT”) as a target cell (in table [0199] (ii) the corresponding age data agreeing with the value indicated by the pattern variable “?YEARS OLD” (that is, each row header of “AGE” table [0200] The table of “AVERAGE BY AGE” in FIG. 15 is generated by taking the average of values in each cell in the “HEIGHT” and “WEIGHT” columns in the “AGE” table [0201] As an example of conversion of the data structure, the following methods are also possible: [0202] (1) definition of a line or a column in a table as a single cell, and registration of all values of the cells in the relevant line or column into the single cell in a list format; [0203] (2) exchange of cell values and headers in a table; [0204] (3) assumption that a table indicates a function from headers to cells, and generation of a new table relating to results obtained by applying this function to each cell value of another table; and [0205] (4) regarding a data structure having a network consisting of nodes and edges, replacement of each node with an edge and replacement of each edge with a node. [0206] As explained above, the present system has a recalculation function via designation of a calculation method between a data structure and cells and their dependence relationship; thus, complicated relationships between various data can be easily represented. Accordingly, it is possible to easily cope with a revision of data. [0207]FIG. 16 is a block diagram showing a hardware structure of the data calculators shown in FIGS. 1 and 8, the structure comprising computer [0208] In order to realize the data calculator as shown in FIG. 1, the program for calculating data is loaded by computer [0209] On the other hand, in order to realize the data calculator as shown in FIG. 8, a program for calculating data stored in storage medium Referenced by
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