Database concepts and the Structured Query Language
Authored by KALPANA CHODAVARAPU
Computers
11th Grade
Used 25+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The SQL used by front-end application programs to request data from the DBMS is called _______
A. DML
B .DDL
C .VDL
D. SDL
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The command used to delete a particular column in a relation is ____________
A.UPDATE TABLE
B.TRUNCATE COLUMN
C.ALTER , DROP
D.DELETE COLUMN
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following operations requires the relations to be union compatible?
A.UNION
B.INTERSECTION
C.DIFFERENCE
D.ALL OF THESE
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The database language that allows us to access data in a database is called :
A.DCL
B.DML
C.DDL
D.None Of Above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which data manipulation command is used to combines the records from one or more tables?
A.SELECT
B.PROJECT
C.JOIN
D.PRODUCT
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a legal expression in SQL?
A.SELECT NULL FROM SALES;
B.SELECT NAME FROM SALES;
C.SELECT * FROM SALES WHEN PRICE = NULL;
D.SELECT # FROM SALES;
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
DCL provides commands to perform actions like
A.Change the structure of Tables
B.Insert, Update or Delete Records and Values
C.Authorizing Access and other control over Database
D.None of Above
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