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Home ‣ Database ‣ Managing Databases with Oracle See What Others Are Saying!
  • Question

  • Which statement about sequences is not true?


  • Options
  • A. A sequence is an object that generates a sequential series of unique numbers.
  • B. Sequences are most often used to provide values for surrogate keys.
  • C. NextVal and CurrVal are both sequence methods.
  • D. Sequences guarantee valid surrogate key values.

  • Correct Answer
  • Sequences guarantee valid surrogate key values. 

    • More questions

    • 1. OnLine Analytical Processing (OLAP) is a BI reporting system.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A transaction in which either all of the database actions occur or none of them do is called:

    • Options
    • A. atomic.
    • B. consistent.
    • C. isolated.
    • D. durable.
      • Discuss
    • 3. How many JDBC driver types does Sun define?

    • Options
    • A. One
    • B. Two
    • C. Three
    • D. Four
      • Discuss
    • 4. The SQL statement used to create a view is CREATE VIEW.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. For every relationship, there are six possible sets of minimum cardinalities.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Using ODL, you can define which of the following?

    • Options
    • A. Attribute
    • B. Structure
    • C. Operation
    • D. All of the above.
      • Discuss
    • 7. The most important reason for data architecture is reliability.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A file data source is one that is local to a single computer.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The relational model consists of:

    • Options
    • A. data in the form of tables.
    • B. data redundancy.
    • C. operations using non-SQL languages.
    • D. unorganized data.
      • Discuss
    • 10. The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.

    • Options
    • A. True
    • B. False
      • Discuss

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