Manipulating data in a relational data base having operational manipulations defined in an input table and displayed results in an output table with a line displayed designating direction of data flow

摘要

An apparatus for manipulating a relational data base includes a unit for describing input data in a table format, a unit for describing all the operational manipulation with respect to the input data in a non- text format, and a unit for outputting data by referring to the relational data base based on the described input data and operational manipulation. The input data of a table format includes an input table and an output table. The input table includes an operational description region and the output table includes a region wherein a map relation between the respective items of the input and output table is described. The manipulation contents are described in the operation manipulation description region and the map relation description region. The operation flow is described and defined by a connection line with directiveness. The apparatus enables description of all the operational manipulation in a graphical manner in a non-text format, providing a user with data base manipulation environment with excellent understandability and operability.