DATA CONVERSION METHOD, AND APPARATUS AND PROGRAM FOR THE SAME

PROBLEM TO BE SOLVED: To provide a data conversion method capable of suppressing processing cost as much as possible by simplifying query type determination processing in transfer while securing that a database system to be transferred is functioned.SOLUTION: In a type determination step SQ202, when a slave query of a source query in a transfer source database system is a function type, a stored procedure type or the other type, the source query is determined as the other type. In a query preparation step SQ207, on the basis of a source query determined as the other type or the stored procedure type, a stored type converted query including function description equivalent to function description of the source query is generated and a function type converted query including the function description equivalent to the function description of the source query is generated.