In the DB Interface Module paradigm, all results are tables. Class RWDBTable encapsulates a single result set, class RWDBResult encapsulates a sequence of 0 or more tables, and class RWDBReader provides the mechanism for reading a table. Consequently, handling multiple result sets is not a problem.

In the DB Interface Module, the execute() method of each DML class returns an RWDBResult object. Applications that are concerned with results returned by an INSERT, for example, can maintain portability between databases by checking the RWDBResult returned by RWDBInserter::execute().

Any data not processed by an application is silently discarded. The DB Interface Module applications need not explicitly discard results nor consider the state of the database connection. Data is exchanged between the MySQL library and the DB Interface Module via four MySQL calls: mysql_stmt_execute(), mysql_store_result(), mysql_stmt_bind_result(), and mysql_stmt_fetch(). The statements associated with these calls are explicitly closed by the Access Module.

The DB Access Module for MySQL uses the MySQL call mysql_store_result() to fetch results of a query execution, fetching the entire result to the client. Hence it is possible to execute multiple operations on a single connection and process their results simultaneously