AccessMode (database connections) Purpose Returns or assigns an integer value indicating the ODBC access mode of a connection. Syntax DBConnection.AccessMode [= Constant] Constant Possible values: SQL_MODE_READ_WRITE Connections may process any read or write requests submitted. This is the default. SQL_MODE_READ_ONLY Connections will be instructed to process only read-only requests. The behavior of the data source and ODBC driver which receive such requests is defined by the implementation. SQL_MODE_DEFAULT Read-write access mode.