InfoTechSite|IT Tutorials, MCQs, and Quizzes

Latest Posts
InfoTechSite
CS/IT MCQ Collections

Solved MCQ on Database Management System (DBMS) Set – 2

Pinterest LinkedIn Tumblr Reddit WhatsApp
Solved MCQ on Database Management System
This set of Solved MCQ on Database Management System (DBMS) includes objective questions on database Normalization, Data Definition Language (DDL), Data Manipulation Language (DML) and Data Control Language (DCL).

1. The candidate key is that you choose to identify each row uniquely is called ……………..
A) Alternate Key
B) Primary Key
C) Foreign Key
D) None of the above

2. …………….. is used to determine whether a table contains duplicate rows.
A) Unique predicate
B) Like Predicate
C) Null predicate
D) In predicate

3. To eliminate duplicate rows ……………… is used
A) NODUPLICATE
B) ELIMINATE
C) DISTINCT
D) None of these

4. State true or false
i) A candidate key is a minimal super key.
ii) A candidate key can also refer to a surrogate key.
A) i-true, ii-false
B) i-false, ii-true
C) i-true, ii-true
D) i-false, ii-false

5. DCL stands for
A) Data Control Language
B) Data Console Language
C) Data Console Level
D) Data Control Level

6. …………………… is the process of organizing data into related tables.
A) Normalization
B) Generalization
C) Specialization
D) None of the above

7. A ………………. does not have a distinguishing attribute if its own and most are dependent entities, which are part of some another entity.
A) Weak entity
B) Strong entity
C) Non-attributes entity
D) Dependent entity

8. …………….. is the complex search criteria in the where clause.
A) Substring
B) Drop Table
C) Predict
D) Predicate

9. ………………… is the preferred method for enforcing data integrity
A) Constraints
B) Stored Procedure
C) Triggers
D) Cursors

10. The number of tuples in a relation is called its …………. While the number of attributes in a relation is called it’s ………………..
A) Degree, Cardinality
B) Cardinality, Degree
C) Rows, Columns
D) Columns, Rows

11) The language that requires a user to specify the data to be retrieved without specifying exactly how to get it is
A. Procedural DML
B. Non-Procedural DML
C. Procedural DDL
D. Non-Procedural DDL

12) Which two files are used during the operation of the DBMS?
A. Query languages and utilities
B. DML and query language
C. Data dictionary and transaction log
D. Data dictionary and query language

13) The database schema is written in
A. HLL
B. DML
C. DDL
D. DCL

14) The way a particular application views the data from the database that the application uses is a
A. module
B. relational model
C. schema
D. subschema

15) The relational model feature is that there
A. is no need for primary key data
B. is much more data independence than some other database models
C. are explicit relationships among records.
D. are tables with many dimensions

16) Which one of the following statements is false?
A. The data dictionary is normally maintained by the database administrator
B. Data elements in the database can be modified by changing the data dictionary.
C. The data dictionary contains the name and description of each data element.
D. A data dictionary is a tool used exclusively by the database administrator.

17) Which of the following are the properties of entities?
A. Groups
B. Table
C. Attributes
D. Switchboards

18) Which database level is closest to the users?
A. External
B. Internal
C. Physical
D. Conceptual

19) Which are the two ways in which entities can participate in a relationship?
A. Passive and active
B. Total and partial
C. Simple and Complex
D. All of the above

20) …….. data type can store unstructured data
A. RAW
B. CHAR
C. NUMERIC
D. VARCHAR

We have created a quiz including solved MCQ on database management system. Please take this quiz to test your knowledge on DBMS fundamentals.

Quiz for Fundamentals of DBMS

 

1. Which clause is an additional filter that is applied to the result?
2. Which command can be used to change a column value in a table?
3. Which candidate key allows you to uniquely identify each row?
4. Which database level is closest to the users?
5. Data items grouped together for storage purposes is called a
6. What is a set of columns that identifies every row in a table?
7. What is the view of total database content?
8. Who proposed the process of normalization in DBMS at first?
9. Which command is used for entering the specific database?
10. Which of the following enables users to create and maintain a database?
11. Which of the following is not a binary operator in relational algebra?
12. Which of the following clauses specifies a search condition for a group or an aggregate?
13. The database schema is written in which of the following languages?
14. DBMS helps to achieve
15. In a snapshot, which clause tells Oracle how long to wait between refreshes?
16. What language requires a user to specify the data to be retrieved without specifying exactly how to get it?
17. Which data type can store unstructured data?
18. Which keyword is used to find the number of values in a column?
19. What is the full form of HSAM?
20. Which of the following is a condition specified on a database schema and restricts the data that can be stored in an instance of the database?
21. Which of the following is an outstanding functionality of SQL that supports automatic selection of the target data?
22. Which of the following databases contains data assisting day-to-day activities of the organization?
23. Which of the following is not a logical database structure?
24. Which one of the following statements is false?
25. What are the different events in Triggers?
26. What is the feature of the relational model?
27. Which of the following are used during the operation of the DBMS?
28. Which of the following files are used during the operation of the DBMS?
29. DFD stands for
30. Which of the following is used to determine whether a table contains duplicate rows?
31. In an ER model, which is described in the database by storing its data.
32. Which of the following is critical in formulating database design?
33. What is the process of organizing data into related tables?
34. In SQL, which command is used to issue multiple CREATE TABLE, CREATE VIEW, and GRANT statements in a single transaction?
35. Which is a proper subset designed to support views belonging to different classes of users in order to hide or protect information?
36. Which of the following are the ways in which entities can participate in a relationship?
37. What is a set of possible data values?
38. Which of the following contains information that defines valid values that are stored in a column or data type?
39. Which normal form is considered adequate for relational database design?
40. In the relational modes, cardinality is also called
41. What represents the number of entities to which another entity can be associated?
42. Which statement is executed automatically by the system?
43. Which key is a minimal superkey that can also refer to a surrogate key?
44. Which of the following is TRUE for the system variable "date"?
45. If a table has more than one set of attributes that could be chosen as the key, it is called
46. Which of the following is a way a particular application views the data from the database that the application uses?
47. In a relational schema, each tuple is divided into fields called
48. Which of the following has to be dealt with by the integrity subsystem is to ensure that only valid values can be assigned to each data item?
49. Which contains information about a file needed by system programs for accessing file records?
50. What operator tests the column for the absence of data?
51. What is a full form of SQL?
52. Which of the following are the properties of entities?
53. Which of the following is used to define the overall design of the database?
54. Which table store information about the database or about the system?
55. Which of the following is the complex search criteria in the where clause?
56. Which database is used as a template for all databases created?
57. Grant and revoke are which of the following statements?
58. What is an advantage of the database management approach?
59. Which of the following is a utility to capture a continuous record of server activity and provide auditing capability?
60. The key to represent the relationship between tables is called
61. Which of the following is/are the DDL statements?
62. What is a logical schema?
63. Which of the following is the preferred method for enforcing data integrity?
64. A top-to-bottom relationship among the items in a database is established by a
65. What is the way a particular application views the data from the database that the application uses?
66. What is the collection of information stored in a database at a particular moment?
67. What defines the structure of a relation that consists of a fixed set of attribute-domain pairs?
68. Which of the following is a preferred method for enforcing data integrity?
69. What will be created if a primary key is combined with a foreign key?
70. Which of the following provides an option for entering SQL queries as execution time, rather than at the development stage?
71. Data independence means
72. Which of the following entity does not have a distinguishing attribute if its own and most are dependent entities?
73. A relational database developer refers to a record as
74. Which of the following defines rules regarding the values allowed in columns and is the standard mechanism for enforcing database integrity?
75. DCL stands for
76. Which character function can be used to return a specified portion of a character string?
77. What is the full form of DDL in Database Management System?
78. In SQL, the CREATE TABLESPACE is used
79. A table can have only one
80. Which of the following components is NOT included in the database environment?
81. Which of the following is not a characteristic of a relational database model?
82. What is the number of tuples in a relation?
83. Which of the following commands can be used to modify a column in a table?
84. Which of the following SQL commands can be used to modify existing data in a database table?
85. Which of the following keys is used to eliminate duplicate rows?
86. Which of the following databases has only a strict parent-child relationship?
87. Which of the following operators is basically a join followed by a project on the attributes of the first relation?
88. In a relational model, relations are also called
89. Which of the following clauses is used to pass on granted privileges to other users?
90. What is a special type of integrity constraint that relates two relations & maintains consistency across the relations?

 

Answers:

1. B. Primary Key
2. A. Unique predicate
3. C. DISTINCT
4. C. i-true, ii-true
5. A. Data Control Language
6. A. Normalization
7. A. Weak entity
8. D. Predicate
9. A. Constraints
10. B. Cardinality, Degree
11. B. Non-Procedural DML
12.C. Data dictionary and transaction log
13. C. DDL
14. D. subschema
15. B. is much more data independence than some other database models
16. B. Data elements in the database can be modified by changing the data dictionary.
17. C. Attributes
18. A. External
19. B. Total and partial
20. A. RAW

Read Next: Solved MCQ on Database Management System (DBMS) Set – 3

We have created a video on YouTube including a solved MCQ on the database management system. Please watch the video and subscribe to our channel to get more videos on DBMS.

Author

Shuseel Baral is a web programmer and the founder of InfoTechSite has over 8 years of experience in software development, internet, SEO, blogging and marketing digital products and services is passionate about exceeding your expectations.

Related Posts

3 Comments

  1. tushar garg Reply

    Sir nielit exam se related questions bhi please upload kar dijiye

Write A Comment

Protected by Security by CleanTalk and CleanTalk Anti-Spam