PROBLEM TO BE SOLVED: To interlock components without using message passing by indirectly succeeding the components of respective classes which are made into capsules through a master class, correlating and interlocking the components each other and generating a class library. ;SOLUTION: Private variables are given to the data of a table name 1, an item name 1 and the like in an input data field class 1 which is made into the capsule. A retrieval key class 2 issues an SELECT sentence, retrieves a data base(DB) and reads DB. The master class 3 is provided with the table of the public variable and items. A processing for reading the private variables of the respective items of an input data field 1 and for declaring them to the public variables of the respective items in the master class 3 is executed. Both classes 1 and 2 are correlated with the relation of indirect succession and are interlocked each other and the class library is generated between the data field class 1 and the retrieval key class 2.;COPYRIGHT: (C)1998,JPO
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