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The advantage of _________ is that both sequential and random access can be used,depending on the situation and the user's needs.


A) indexed sequential access method (ISAM)
B) sequential access method
C) direct access method
D) random access method

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Data warehouses are sometimes called "hypercubes" because they _____.


A) are function oriented
B) store multidimensional data
C) capture raw transaction data
D) manage transactions

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What are some of the sources of external data?

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Some of the sources of external data are...

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Which of the following statements is true of data marts and data warehouses?


A) Consolidating information from different departments is easier in data marts than in data warehouses.
B) Data marts have more extended scope than data warehouses.
C) Access to data is often slower in data marts than in data warehouses.
D) Despite being smaller,data marts can usually perform the same type of analysis as data warehouses.

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