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SQL Queries. and QBE Queries can be either directly executed or prepared first and then executed. When a query is prepared, BDE checks its validity; if the query is valid, BDE creates a query object and returns a query statement handle.
For a general exposition about query statements, see Querying databases for more information on this.
Certain properties of a query can be changed once the query handle is obtained. For example, if the query has parameter markers, the values of parameters to be used can be set prior to executing a query. See Getting and setting properties.