Cite some examples of integrity constraints that you think can apply to the database shown in Figure 1.2.

What will be an ideal response?


We give a few constraints expressed in English. Following each constraint, we give its type in the relational database terminology that will be covered in Chapter 6, for reference purposes.

Computer Science & Information Technology

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Analyze the following code.

``` Number[] numberArray = new Integer[2]; numberArray[0] = new Double(1.5); ``` Which of the following statements is correct? a. You cannot use Number as a data type since it is an abstract class. b. Since each element of numberArray is of the Number type, you cannot assign an Integer object to it. c. Since each element of numberArray is of the Number type, you cannot assign a Double object to it. d. At runtime, new Integer[2] is assigned to numberArray. This makes each element of numberArray an Integer object. So you cannot assign a Double object to it.

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Susan wants to prepare a presentation that will calculate the total cost of ownership for the system. What financial analysis tools are available to her, and what are the advantages (and possible disadvantages) of each tool?

What will be an ideal response?

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You can only type in the page body content area of a ________ page

Fill in the blank(s) with correct word

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To look at two different parts of the same document at the same time, point to the ________ near the middle of the screen

A) point B) em dash C) field D) split bar

Computer Science & Information Technology