DATA WAREHOUSING QUIZ

The extract process is which of the following?

Capturing a subset of the data contained in various operational systems

Capturing all of the data contained in various decision support systems

Capturing all of the data contained in various operational systems

Capturing a subset of the data contained in various decision support systems

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Most operational systems are based on the use of transient data.

True

False

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Data scrubbing is which of the following?

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

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

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Both status data and event data can be stored in a database.

True

False

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Fact tables are which of the following?

Partially denoralized

Completely denoralized

Partially normalized

Completely normalized

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Data in operational systems are typically fragmented and inconsistent.

False

True

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Independent data marts are often created because an organization focuses on a series of short-term business objectives.

True

False

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Periodic data are data that are physically altered once added to the store.

False

True

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A snowflake schema is which of the following types of tables?

Fact

Dimension

Helper

All of these

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The load and index is which of the following?

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

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

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

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

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