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Solved MCQ Questions on Structured Query Language set-6


1) ......keyword is used to eliminate the duplicates.

A. distinct

B. unique

C. union

D. intersect


2) ..........is a query that has another query embedded within it.

A. sub query

B. structured query

C. nested query

D. sequence query


3) Which of the following is not an aggregate operator?

A. MAX

B. MIN

C. TOTAL

D. AVG


4) Any SQL statement inside an embedded SQL program must be inside the boundaries of ....

A. EXE SQL and END

B. EXEC SQL and END

C. EXEC and END-EXEC

D. EXEC SQL and END-EXEC


5) In embedded SQL, the per-compiler translates the SQL statements inside the code blocks into the appropriate ....

A. PL/SQL block

B. SQL * plus

C. 3GL statements

D. equivalent C code blocks


6) ........ accepts multiple rows a SQL query, stores them and hands over them one by one to the 3GL program.

A. database program

B. database cursor

C. database object

D. database constraints


7) The ........... is useful in the case of online application.

A. embedded SQL

B. PL/SQL

C. static SQL

D. dynamic SQL


8) What is the Role of revoke command?

A. To give privilege

B. To get back privilege

C. To execute the query

D. To run the program


9) The clause ALTER TABLE in SQL can be used to

A. add an attribute

B. delete an attribute

C. alter the default values of an attribute

D. all of the above


10) Which of the following operations need the participating relations to be union compatible?

A. UNION

B. INTERSECTION

C. DIFFERENCE

D. All of the above



11) ........ is a virtual table that draws its data from the result of an SQL SELECT statement.

A. View

B. Synonym

C. Sequence

D. Transaction


12) In SQL, which of the following is not a data definition language commands?

A. RENAME

B. REVOKE

C. GRANT

D. UPDATE


13) In SQL, which command(s) is(are) used to change a table's storage characteristics?

A. ALTER TABLE

B. MODIFY TABLE

C. CHANGE TABLE

D. All of the above


14) Which command will delete all data from a table and will not write to the rollback segment?

A. DROP

B. DELETE

C. CASCADE

D. TRUNCATE


15) Which is not part of the Data Definition Language?

A. CREATE

B. ALTER

C. ALTER SESSION

D. CREATE SESSION


16) What operator tests column for the adsence of data?

A. IS Null operator

B. ASSIGNMENT operator

C. LIKE operator

D. NOT operator


17) NOT BETWEEN 10 AND 20 ......

A. displays NULL values

B. does not display NULL values

C. may display NULL values

D. display values


18) Which of the following SQL commands can be used to add data to a database table?

A. ADD

B. UPDATE

C. APPEND

D. INSERT


19) ........ can be used to retrieve data from multiple table.

A. Embedded SQL

B. Dynamic SQL

C. Joins

D. Views


20) .......... privides option for entering SQL queries at execution time, rather than at the development stage.

A. PL/SQL

B. SQL * Plus

C. SQL

D. Dynamic SQL



Answers:


1) A. distinct
2) C. nested query
3) C.TOTAL
4) D. EXEC SQL and END-EXEC
5) C. 3GL statements
6) B. database cursor
7) D. dynamic SQL
8) B. To get back privilege
9) D. all of the above
10) D. All of the above
11) A. View
12) D. UPDATE
13) A. ALTER TABLE
14) B. DELETE
15) C. ALTER SESSION
16) A. IS Null operator
17) B. does not display NULL values
18) D. INSERT
19) C. Joins
20) D. Dynamic SQL


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