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The Database Environment Questions and Answers

31.

All enterprise resource planning (ERP) systems are heavily dependent on databases to store the data required by the ERP applications.

Answer: A

Correct answer: True

An ERP system is a set of applications sharing one integrated database, and it is that shared database which lets an order raised in sales appear immediately in manufacturing and in finance. Without it the applications would be separate systems again, which is precisely what ERP was devised to replace.

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32.

A database application can perform which of the following activities?

Answer: D

Correct answer: All of the above.

A database application is the program through which people work with the data, so it does whatever the users need - adding, reading, updating and deleting records, and presenting the results. The DBMS provides the mechanism; the application supplies the purpose and the interface.

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33.

Metadata enables database designers and users to do all of the following except:

Answer: A

Correct answer: sample data.

Metadata is data about data: it records what exists, what each item means, and how similar items differ. What it does not contain is the data itself, so it cannot be sampled for values - a designer reading the catalogue learns that a field is a currency amount in sterling, not what any particular amount is.

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