Exam 7: Dbms Functions

____ a database reverses encryption.

One strategy to manage deadlocks is to let them occur and then have the DBMS detect and break any deadlock.

Smart cards have built-in circuits containing processing logic to identify the cardholder.

The successful completion of a transaction is known as an after log image.

The technique for identifying the person who is attempting to access the DBMS is known as ____.

If two or more users are waiting for the other user to release a lock before they can proceed,this is known as a ____.

One guideline for writing programs for concurrent updates in a PC-based DBMS states that if an update transaction must lock more than one row in the same table,the whole table must be locked.

A DBMS must provide ways to ensure that only authorized users can access the database.

Explain how a database is updated using batch processing.

The more important it is to avoid redoing work,the more often you should make backups.