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Bound Descriptor Records

When the application sets the SQL_DESC_DATA_PTR field of a descriptor record so that it no longer contains a null value, the record is said to be bound.

If the descriptor is an APD, each bound record constitutes a bound parameter. For input parameters, the application must bind a parameter for each dynamic parameter marker in the SQL statement before executing the statement. For output parameters, the application need not bind the parameter.

If the descriptor is an ARD, which describes a row of database data, each bound record constitutes a bound column.

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