Database close

The DB->close() database handle closes the DB handle. By default, DB->close() also flushes all modified records from the database cache to disk.

There is one flag that you can set to customize DB->close():

Do not flush cached information to disk.
It is important to understand that flushing cached information to disk only minimizes the window of opportunity for corrupted data, it does not eliminate the possibility.

While unlikely, it is possible for database corruption to happen if a system or application crash occurs while writing data to the database. To ensure that database corruption never occurs, applications must either: