| 91. | A database application can perform which of the following activities? |
| a. | Add records |
| b. | Read records |
| c. | Update records |
| d. | All of the above. |
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Answer: (d).All of the above.
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| 92. | An enterprise database is which of the following? |
| a. | A database designed to support only users external to an organization |
| b. | A database designed to support an entire organization |
| c. | A database designed to support a relatively small group |
| d. | A database designed to support a single PC |
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Answer: (b).A database designed to support an entire organization
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| 93. | Legacy data is which of the following? |
| a. | Data contained in a newly-installed system |
| b. | Data rejected during the installation of a new system |
| c. | Data contained in a file system |
| d. | Data contained by a system used prior to the installation of a new system |
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Answer: (d).Data contained by a system used prior to the installation of a new system
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| 94. | Which of the following is true for a relational database? |
| a. | Data is represented by tables. |
| b. | It is difficult to access data. |
| c. | Complex programs have to be written for simple queries. |
| d. | All of the above. |
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Answer: (a).Data is represented by tables.
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| 95. | A shared database should: |
| a. | be accurate and available. |
| b. | provide for backup and recovery. |
| c. | be secure. |
| d. | All of the above. |
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Answer: (d).All of the above.
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| 96. | A data warehouse uses: |
| a. | partial operational data. |
| b. | historical operational data. |
| c. | future operational data. |
| d. | health care data. |
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Answer: (b).historical operational data.
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| 97. | A database management system (DBMS) is a: |
| a. | hardware system used to create, maintain, and provide controlled access to a database. |
| b. | hardware system used to create, maintain, and provide uncontrolled access to a database. |
| c. | software system used to create, maintain, and provide controlled access to a database. |
| d. | software system used to create, maintain, and provide uncontrolled access to a database. |
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Answer: (c).software system used to create, maintain, and provide controlled access to a database.
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| 98. | An enterprise data model is: |
| a. | a graphical model that shows the high-level entities for an organization. |
| b. | a graphical model that shows all entities for an organization. |
| c. | a non-graphical model that shows the high-level entities for an organization. |
| d. | a non-graphical model that shows the all entities for an organization. |
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Answer: (a).a graphical model that shows the high-level entities for an organization.
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| 99. | A data warehouse is which of the following? |
| a. | Can be updated by end users. |
| b. | Contains numerous naming conventions and formats. |
| c. | Organized around important subject areas. |
| d. | Contains only current data. |
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Answer: (c).Organized around important subject areas.
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| 100. | An operational system is which of the following? |
| a. | A system that is used to run the business in real time and is based on historical data. |
| b. | A system that is used to run the business in real time and is based on current data. |
| c. | A system that is used to support decision making and is based on current data. |
| d. | A system that is used to support decision making and is based on historical data. |
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Answer: (b).A system that is used to run the business in real time and is based on current data.
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