DISTRIBUTED DATABASES QUIZ

Managers to treat the data as if it is at one location

All of these

Programmers to treat the data as if it is at one location

Users to treat the data as if it is at one location

False

True

False

True

False

True

The required data are at one local site and the distributed DBMS routes requests as necessary.

The required data are located in at least one nonlocal site and the distributed DBMS routes requests as necessary.

The required data are at one local site and the distributed DBMS passes the request to only the local DBMS.

The required data are located in at least one nonlocal site and the distributed DBMS passes the request to only the local DBMS.

False

True

All of these

The application's data can be somewhat out-of-date.

When transmission speeds and capacity in a network prohibit frequent refreshing of large tables.

When using many nodes with different operating systems and DBMSs and database designs.

Maintains a log of transactions

Maintains appropriate concurrency control

Maintains before and after database images

All of these

Software cost

Modular growth

Software complexity

Slow Response

Remote unit of work

Unit of work

Distributed request

Distributed unit of Work