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Download Oracle Database SQL Exam Dumps

NEW QUESTION 51

Examine these SQL statements that are executed in the given order:



What will be the status of the foreign key EMP_MGR_FK?

  • A. It will be enabled and deferred.
  • B. It will remain disabled and can be re-enabled manually.
  • C. It will remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.
  • D. It will be enabled and immediate.

Answer: B

NEW QUESTION 52

Which two statements are true regarding the EXISTSoperator used in the correlated subqueries? (Choose two.)

  • A. It is used to test whether the values retrieved by the inner query exist in the result of the outer query.
  • B. The outer query stops evaluating the result set of the inner query when the first value is found.
  • C. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.
  • D. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.

Answer: B,C

Explanation:

Explanation/Reference:

References:

http://www.techonthenet.com/oracle/exists.php

NEW QUESTION 53

Which two statements are true about Oracle synonyms?

  • A. A synonym can be created on an object in a package.
  • B. A synonym can have a synonym.
  • C. Any user can create a PUBLIC synonym.
  • D. A synonym has an object number.
  • E. All private synonym names must be unique in the database.

Answer: B,D

NEW QUESTION 54

View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTSand TIMEStables.



The PROD_IDcolumn is the foreign key in the SALEStable, which references the PRODUCTStable.

Similarly, the CUST_IDand TIME_IDcolumns are also foreign keys in the SALEStable referencing the CUSTOMERSand TIMEStables, respectively.

Evaluate the following CREATE TABLEcommand:

CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)

AS

SELECT prod_id, cust_id, time_id

FROM sales;

Which statement is true regarding the above command?

  • A. The NEW_SALEStable would not get created because the DEFAULTvalue cannot be specified in the column definition.
  • B. The NEW_SALEStable would not get created because the column names in the CREATETABLE command and the SELECTclause do not match.
  • C. The NEW_SALEStable would get created and all the NOTNULLconstraints defined on the specified columns would be passed to the new table.
  • D. The NEW_SALEStable would get created and all the FOREIGNKEYconstraints defined on the specified columns would be passed to the new table.

Answer: C

NEW QUESTION 55

......