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Home ‣ Database ‣ SQL for Database Construction See What Others Are Saying!
- Question
The SQL statement used to create a view is CREATE VIEW.
Options- A. True
- B. False
- Correct Answer
- True
- 1. The advantage of optimistic locking is that:
Options- A. the lock is obtained only after the transaction has processed.
- B. the lock is obtained before the transaction has processed.
- C. the lock never needs to be obtained.
- D. transactions that are best suited are those with a lot of activity. Discuss
- 2. Legacy data is which of the following?
Options- 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 Discuss
- 3. With this type of index, the bottom level of an index does not contain data, but rather it contains pointers to data.
Options- A. Nonclustered
- B. Clustered
- C. Primary
- D. Secondary Discuss
- 4. Which of the following statements is not true about XML Schemas:
Options- A. They are used to define the content and structure of data.
- B. They define a set of symbols and the relationships of those symbols.
- C. They are themselves XML documents.
- D. They have their own syntax. Discuss
- 5. Dirty read, nonrepeatable, and phantom reads are not possible in this instance.
Options- A. Read committed
- B. Read uncommitted
- C. Repeatable read
- D. Serializable Discuss
- 6. Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that:
Options- A. A ? B.
- B. A ? C.
- C. A ? (B,C).
- D. (B,C) ? A. Discuss
- 7. A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.
Options- A. True
- B. False Discuss
- 8. With an enterprise data model, it is much easier to build applications because you know exactly what data exist and what needs to be added.
Options- A. True
- B. False Discuss
- 9. What is not true of a Java bean?
Options- A. There are no public instance variables.
- B. All persistent values are accessed using getxxx and setxxx methods.
- C. It may have many constructors as necessary.
- D. All of the above are true of a Java bean. Discuss
- 10. With which type of SQL Server recovery model are all database changes logged?
Options- A. Differential recovery
- B. Full recovery
- C. Simple recovery
- D. Bulk-logged recovery Discuss
More questions
Correct Answer: the lock is obtained only after the transaction has processed.
Correct Answer: Data contained by a system used prior to the installation of a new system
Correct Answer: Nonclustered
Correct Answer: They have their own syntax.
Correct Answer: Serializable
Correct Answer: A ? B.
Correct Answer: False
Correct Answer: True
Correct Answer: It may have many constructors as necessary.
Correct Answer: Full recovery
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