DISTRIBUTED DATABASES QUIZ

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 passes the request to only the local DBMS.

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 routes requests as necessary.

False

True

All of these

Partially or totally replicated across sites

Partitioned into segments at different sites

Totally centralized at one location and accessed by many sites

A different DBMS is used at each location and data are not distributed across all nodes.

The same DBMS is used at each location and data are distributed across all nodes.

The same DBMS is used at each location and data are not distributed across all nodes.

A different DBMS is used at each location and data are distributed across all nodes.

Only the joining attributes are sent from one site to another and then all of the rows are returned.

All of the attributes are sent from one site to another and then only the required rows are returned.

Only the joining attributes are sent from one site to another and then only the required rows are returned.

All of the attributes are sent from one site to another and then only the required rows are returned.

True

False

True

False

Modular growth

Software cost

Software complexity

Slow Response

True

False

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

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The application's data can be somewhat out-of-date.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