DATA WAREHOUSING QUIZ

Data in which changes to existing records do not cause the previous version of the records to be eliminated

Data that are never deleted once they have been added

Data that are never altered or deleted once they have been added

Data in which changes to existing records cause the previous version of the records to be eliminated

To confirm that data exists

To analyze data for expected relationships

To explain some observed event or condition

To create a new data warehouse

Near real-time updates

Data that can extracted from numerous internal and external sources

At least one data mart

All of these

A system that is used to support decision making and is based on historical data.

A system that is used to support decision making and is based on current data.

A system that is used to run the business in real time and is based on historical data.

A system that is used to run the business in real time and is based on current data.

A process to load the data in the data warehouse and to create the necessary indexes

A process to upgrade the quality of data before it is moved into a data warehouse

A process to upgrade the quality of data after it is moved into a data warehouse

A process to reject data from the data warehouse and to create the necessary indexes

False

True

False

True

True

False

Completely denoralized

Partially denoralized

Partially normalized

Completely normalized

Can be updated by end users.

Contains only current data.

Contains numerous naming conventions and formats.

Organized around important subject areas.