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Additional info for Delphi for Windows
To drop the current database, choose File | Drop Database.... A dialog box will ask you to confirm that you want to delete the database. A database can be dropped only by its creator or the SYSDBA user. INI. Caution Dropping a database deletes all data and metadata in the database. Disconnecting From a Database To disconnect from the database to which Windows ISQL is connected, choose File | Disconnect from Database.... A dialog box will open to confirm that you want to disconnect. If there are any uncommitted database changes, you will be prompted to commit them before disconnecting.
Next: recalls the next SQL statement in the command history, making it the current statement. When the current statement is the last statement in the command history, this button is dimmed and you may not choose it. As an alternative to these buttons, use the hot keys Alt+R, Alt+P, and Alt+N, respectively. The hot key for each button is underlined in its label. 42 Local InterBase Server User’s Guide Legal Statements You can execute interactively any SQL statements identified as “available in ISQL” in the Language Reference.
It can also be used to roll back a partially completed transaction prior to retrying it, and it can be used to restore a database to its prior state if a program encounters an unrecoverable error. Important If the program ends before a transaction ends, a transaction is automatically rolled back, but databases are not closed. If a program ends without closing the database, data loss or corruption is possible. Therefore, open databases should always be closed by issuing explicit DISCONNECT, COMMIT RELEASE, or ROLLBACK RELEASE statements.