CDatabase::CanUpdate
Call this member function to determine whether the CDatabase object allows updates.
BOOL CanUpdate( ) const;
Return Value
Nonzero if the CDatabase object allows updates; otherwise 0, indicating either that you passed TRUE in bReadOnly when you opened the CDatabase object or that the data source itself is read-only. The data source is read-only if a call to the ODBC API function SQLGetInfo for SQL_DATASOURCE_READ_ONLY returns "y".
Remarks
Not all drivers support updates.
Requirements
Header: afxdb.h