Db ch9

Database administration tasks have to be performed for single-user, personal databases.

• TRUE

• FALSE

Database administration is more important but less difficult in multiuser database systems than in single-user database systems.

• TRUE

• FALSE

In general, the overall responsibility of the DBA is to facilitate the development and use of the database system.

• TRUE

• FALSE

The DBA has to find a balance between the conflicting goals of maximizing availability of the database to users and protecting the database.

• TRUE

• FALSE

The DBA is responsible for managing changes to the database structure, but is rarely involved in the original design of the structure.

• TRUE

• FALSE

Changes in the database structure usually involve only one application.

• TRUE

• FALSE

The database is most vulnerable to failure after a change to its structure.

• TRUE

• FALSE

One important reason for documenting changes to the database structure is for diagnosing errors.

• TRUE

• FALSE

Concurrency control measures are taken to ensure that one user's work has absolutely no influence on another user's work.

• TRUE

• FALSE

A transaction is sometimes called atomic because it is performed as a unit.

• TRUE

• FALSE