Prentice Hall Oracle Plsql By Example 3Rd Edition [Electronic resources] نسخه متنی

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Prentice Hall Oracle Plsql By Example 3Rd Edition [Electronic resources] - نسخه متنی

Benjamin Rosenzweig

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Lab 8.2 Self-Review Questions


In order to test your progress, you should be able to answer the following questions.

1)

How many times is a WHILE loop executed if the test condition always evaluates to FALSE?

  • _____ The loop does not execute at all.

  • _____ The loop executes once.

  • _____ The loop executes an infinite number of times.

  • 2)

    How many times is a WHILE loop executed if the test condition always evaluates to TRUE?

  • _____ The loop does not execute at all.

  • _____ The loop executes once.

  • _____ The loop executes an infinite number of times.

  • 3)

    What value must the test condition evaluate to in order for the loop to terminate?

  • _____ TRUE

  • _____ FALSE

  • _____ NULL

  • 4)

    What causes a WHILE loop to terminate prematurely?

  • _____ The EXIT condition evaluates to TRUE before the test condition evaluates to FALSE.

  • _____ The test condition evaluates to FALSE before the EXIT condition evaluates to TRUE.

  • _____ Both test and EXIT conditions evaluate to FALSE.

  • 5)

    A WHILE loop will execute a minimum of

  • _____ zero times.

  • _____ one time.

  • _____ infinite number of times.

  • Answers appear in Appendix A,

    Section 8.2 .


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