DISTRIBUTED DATABASES QUIZ

Maintains a log of transactions

Maintains before and after database images

Maintains appropriate concurrency control

All of these

True

False

False

True

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

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

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

All of these

False

True

Partially or totally replicated across sites

Partitioned into segments at different sites

All of these

Totally centralized at one location and accessed by many sites

False

True

True

False

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.

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.

False

True