Multiple Choice Questions

Set 6

 

1 .Which SQL statement is not used for Database updates.

1.INSERT       2. UPDATE 3. DELETE     4.SELECT

2.The_________ statement is the most important statement in the language and is used to express a query.

1.INSERT       2. UPDATE 3. DELETE     4.SELECT

3.There are _______ types of subquery.

1.ONE                        2. THREE       3.FIVE                       4.SEVEN

4. the columns of the result table come from more than one table, ________must be used.

1. AND               2. &&                         3. JOIN      4.NONE

5.DBMS based on ______ .

1.Data                       2.user                        3.SQL             4. ALL

6.The SQL programming language was first developed in the _______ .

1. 1970 1975      3. 1980      4. 1982

7.The standard specifies ______different data types for data in an SQL database.

1. TWO                      2.FOUR         3.SIX   4.EIGHT

8.Although SQL was originally an ________ concept.

1.HP               2.DELL                       3.IBM                        4.NONE

9.A vertical bar ( | ) indicates a choice among _______ .

1.same                      2. Alternatives                   3.both

10.In practice, the DDL statements are used to create the database structure.

1.DML                       2.DDL                        3.SQL             4.BNF

 

 

31.All non-numeric data values must be enclosed in _______.

1. Double quotes                2. Single quotes     3.square brackets  4. curly braces

 

32.Which one is not an comparison operator for SQL.

1. =                      2.  >                3.  !>              4.&&

 

33.ANDs are evaluated before _____.

1. OR 2.  NOT                      3. BOTH a & b                     4. NONE

 

34.An expression is evaluated_______ .

1. left to right   2.  Right to  left                   3. Depend on operators used

 

35.Which clause must always be the last clause of the SELECT statement.

1.WHERE                  2. ORDER BY                       3. COUNT                 4. GROUP BY

 

More MCQs Of Database Systems

1. Database Models MCQs in DBMS
   1. Hierarchical model MCQs in DBMS
   2. Network model MCQs in DBMS
   3. Relational model MCQs in DBMS
   4. Object-oriented model MCQs in DBMS
   5. NoSQL databases MCQs in DBMS
2. Relational Database Model MCQs in DBMS
   1. tables, attributes, tuples, and relations MCQs in DBMS
   2. Primary keys and foreign keys MCQs in DBMS
   3. Integrity constraints MCQs in DBMS
3. SQL (Structured Query Language) MCQs in DBMS
   1. Data Definition Language (DDL) MCQs in DBMS
   2. Data Manipulation Language (DML) MCQs in DBMS
   3. Data Control Language (DCL) MCQs in DBMS
   4. Transaction Control Language (TCL) MCQs in DBMS
   5. Advanced SQL queries and functions MCQs in DBMS
4. Database Design MCQs in DBMS
   1. Entity-Relationship (ER) modeling MCQs in DBMS
   2. Extended ER modeling MCQs in DBMS
   3. Normalization and normal forms (1NF, 2NF, 3NF, BCNF) MCQs in DBMS
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   2. Data independence MCQs in DBMS
   3. DBMS components and functions MCQs in DBMS
6. Storage and File Structure MCQs in DBMS
   1. Data storage on physical media MCQs in DBMS
   2. File organization and access methods MCQs
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   4. RAID technology MCQs in DBMS
7. Query Processing and Optimization MCQs in DBMS
8. Database Transaction Management MCQs in DBMS
   1. ACID properties (Atomicity, Consistency, Isolation, Durability) MCQs in DBMS
   2. Transaction states and lifecycle MCQs in DBMS
   3. Concurrency control techniques (locking, timestamping, multiversion) MCQs in DBMS
   4. Deadlock detection and resolution MCQs in DBMS
9. Database Security and Authorization MCQs in DBMS
   1. Authentication and authorization mechanisms MCQs in DBMS
   2. Data encryption techniques MCQs in DBMS
   3. Role-based access control MCQs in DBMS
   4. SQL injection prevention MCQs in DBMS
10. Backup and Recovery MCQs in DBMS
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    3. Disaster recovery planning MCQs in DBMS
11. Distributed Databases MCQs in DBMS
    1. Distributed database architecture MCQs MCQs in DBMS
    2. Data fragmentation, replication, and allocation in DBMS
    3. Distributed query processing MCQs in DBMS
    4. Consistency models and protocols MCQs in DBMS

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