Abstract: Apparatus for verifying conversion 117 inserts a cord extracting an SQL sentence in a program to handle with Access database system 111 and extracts an SQL sentence at the time of practice automatically. And it is converted into an SQL sentence handled with SQL-SERVER database system 113. And an SQL sentence is carried out with Access database system 111 and SQL-SERVER database system 113, and the result is compared, and the SQL sentence that is mismatched for a result is identified.

Abstract: Converting from a database system to another database system. The conversion process including translating a set of queries for the first database to be used in the second database by determining the query types of the parent and child queries and generating the translated queries according to the type of the query. The type of the query judged as the stored-procedure or the dummy type, irrespective of the existence of a parent query, the function type query after conversion other than the same stored-procedure type query after conversion of the function are generated in all cases. As a result problem is not occurred even when there is a parent.