| 21. | Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM? |
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Answer: (b).DB2
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| 22. | The following are components of a database except ________ . |
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Answer: (c).reports
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| 23. | An application where only one user accesses the database at a given time is an example of a(n) ________ . |
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Answer: (a).single-user database application
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| 24. | An on-line commercial site such as Amazon.com is an example of a(n) ________ . |
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Answer: (c).e-commerce database application
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| 25. | Which of the following products was the first to implement true relational algebra in a PC DBMS? |
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Answer: (d).R:base
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| 26. | Because it contains a description of its own structure, a database is considered to be ________ . |
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Answer: (c).self-describing
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| 27. | The following are functions of a DBMS except ________ . |
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Answer: (a).creating and processing forms
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| 28. | Helping people keep track of things is the purpose of a(n) ________ . |
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Answer: (a).database
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| 29. | Which of the following products implemented the CODASYL DBTG model? |
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Answer: (a).IDMS
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| 30. | An Enterprise Resource Planning application is an example of a(n) ________ . |
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Answer: (b).multiuser database application
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