| 摘要 |
A message display system (and method) is provided for DML object reproduction in a relational database in which DML objects for accessing tables made up with rows and columns are made from user programs in compilation and are registered in a DML object library. Herein, DML objects are produced by compilation of the user programs each containing SQL statements, so that the DML objects are registered in the DML object library. In response to a change of table definition of a designated table within the tables, the user programs are subjected to analysis to select a user program related to the designated table whose definition is changed with reference to the DML object library, so that a DML object is automatically reproduced in connection with the selected user program using the designated table. In addition, a reproduction result is displayed on a screen. If the change of the table definition designates addition of a column to the designated table, messages are displayed on the screen to inform the user of the addition of the column to the designated table as well as a host variable which is required when the selected user program refers to the column being added to the designated table. Incidentally, the host variable is selected and displayed in connection with a using language used for compilation, which is examined with reference to a directory storing DML object management information.
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