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 17.2 Self-Review Questions


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

1)

How many times does a row trigger fire if a DML (INSERT, UPDATE, or DELETE) operation is issued against a table?

  • _____ As many times as there are rows affected by the DML operation

  • _____ Once per DML operation

  • 2)

    How many times does a statement trigger fire if a DML (INSERT, UPDATE, or DELETE) operation is issued against a table?

  • _____ As many times as there are rows affected by the DML operation

  • _____ Once per DML operation

  • 3)

    What does the statement FOR EACH ROW mean?

  • _____ A trigger is a statement trigger.

  • _____ A trigger is a row trigger.

  • 4)

    INSTEAD OF triggers are defined on which of the following?

  • _____ Table

  • _____ View

  • _____ None of the above

  • 5)

    INSTEAD OF triggers must always be which of the following?

  • _____ Statement trigger

  • _____ Row trigger

  • Answers appear in Appendix A,

    Section 17.2 .


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