Database Management System Multiple Choice Questions:-
1) ——- responsible for authorizing access to the database, for coordinating and monitoring its use, acquiring software, and hardware resources, controlling its use and monitoring efficiency of operations.
A. Authorization Manager
B. Storage Manager
C. File Manager
D. Transaction Manager
E. Buffer Manager
2) ——- is a property that describes various characteristics of an entity
A. ER Diagram
B. Column
C. Relationship
D. Attribute
3) ——– level describes what data is stored in the database and the relationships among the data
A. Physical Level
B. Logical Level
C. Conceptual Level
D. None of the above
4) ———- denote derived attributes.
A. Double ellipse
B. Dashed ellipse
C. Squared ellipse
D. Ellipse with attribute name underlined
5) A ——— is an association between entities
A. Relation
B. One to One
C. Generalization
D. Specialization
6) ————- stores metadata about the structure of the database
A. Physical database
B. Query Analyzer
C. Data Dictionary
D. Data Catalog
7) ————is a collection of operations that perform s single logical function in a database application
A. Transaction
B. Concurrent operation
C. Atomicity
D. Durability
8) The problem that is compounded when constraints involve several data items from different files are Called ——–
A. Transaction Control Management Problem
B. Security Problem
C. Integrity Problem
D. Durability Problem
9) Ensuring atomicity is the responsibility of the ————component
A. File Manager
B. Buffer Manager
C. DBA
D. Transaction Manager
10) —–manages the allocation of the space on the disk storage and the database structure used to represent information stored on disk
A. Disk Manager
B. File Manager
C. Buffer Manager
D. Memory Manager
E. None of the above
11) is the minimal super key
A. Primary Key
B. Candidate Key
C. Surrogate Key
D. Unique Key
E. Alternate Key
12) -engine executes low-level instructions generated by the DML compiler
A. DDL Analyzer
B. Query Interpreter
C. Database Engine
D. None of the above
13) ————responsible to define the content, the structure, the constraints, and functions or transactions against the database
A. Transaction Manager
B. Query Analyzer
C. DBA
D. All the above
E. None of the above
14) In the ER model ————-denote derived attributes
A. Double ellipse
B. Diamond
C. Rectangle
D. None of the above
15) Foreign Key can be null
A. TRUE
B. FALSE
16) All primary keys should be superkeys.
A. TRUE
B. FALSE
17) In Relational database, Data is stored as record types and the relationship is represented by set types
A. True
B. False
18) In Hierarchical database to get to a low-level table, you start at the root and work your way down the tree until you reach your target data.
A. True
B. False
19) Using relational model we design conceptual database design
A. True
B. False
20) A conceptual data model is the source of information for the logical design phase
A. True
B. False
21) Logical database design describes base relations, file organizations, and indexes that are used to achieve efficient access to data.
A. True
B. False
22) Conceptual data modeling uses a high-level data modeling concept of E-R Models
A. True
B. False
23) Tables are required to have at least one column
A. True
B. False
24) Logical data independence. Refers to the separation of the external views from the conceptual view
A. True
B. False
25) Duplication of data is the disadvantage of DBMS
A. True
B. False
26) Candidate key can have a null value
A. True
B. False
27) Each program maintains its own set of data. So users of one program may be unaware of potentially useful data held by other programs this leads to duplication of data
A. True
B. False
28) A traditional database stores just data – with no procedures
A. True
B. False
29) Simple Attribute composed of multiple components, each with an independent existence.
A. True
B. False
30) Cardinality specifies how many instances of an entity relate to one instance of another entity.
A. True
B. False
31. The ascending order of a data hierarchy is:
a. bit-byte-record-field-file-database
b. byte-bit-field-record-file-database
c. bit-byte-field-record-file-database
d. bit-byte-file-record-field-database
32. Which of the following is true of a network structure?
a. t is a physical representation of the data
b. It allows a many-to-many relationship
c. It is conceptually simple
d. It will be the dominant database of the future
33. Which of the following is a problem of the file management system?
a. difficult to update
b. lack of data independence
c. data redundancy
d. program dependence
e. all of the above
Question 4:
One data dictionary software package is called
a. DB/DC dictionary
b. TOTAL
c. ACCESS
d. Datapac
e. Data Manager
Question 5:
The function of a database is …
a. to check all input data
b. to check all spelling
c. to collect and organize input data
d. to output data
Question 6:
What is the language used by most of the DBMSs for helping their users to access data?
a. High-level language
b. SQL
c. Query Language
d. 4GL
Question 7:
The model for a record management system might be
a. handwritten list
b. a Rolodex card file
c. a business form
d. all of above
Question 8:
Primitive operations common to all record management system include
a. print
b. sort
c. look-up
d. all of above
Question 9:
In a large DBMS
a. each user can “see” only a small part of the entire database
b. each subschema contains every field in the logical schema
c. each user can access every subschema
Question 10:
Information can be transferred between the DBMS and a
a. spreadsheet program
b. word processor program
c. graphics program
d. all of the above
Answers:
1. c 2. b 3. e 4. a 5. c 6. c 7. d 8. c 9. a 10. d
DBMS Objective Questions Pdf Free Download ::
Ques 1:
Which of the following fields in a student file can be used as a primary key?
a. class
b. Social Security Number
c. GPA
d. Major
Question 2:
Which of the following is not an advantage of the database approach
a. Elimination of data redundancy
b. Ability of associate deleted data
c. increased security
d. program/data independence
e. all of the above
Question 3:
Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time?
a. report writer
b. query language
c. data manipulation language
. transaction log
e. none of the above
Question 4:
In the DBMS approach, application programs perform the
a. storage function
b. processing functions
c. access control
d. all of the above
e. none of the above
Question 5:
A set of programs that handle a firm’s database responsibilities is called
a. database management system (DBMS)
b. database processing system (DBPS)
c. data management system (DMS)
d. all of above
Question 6:
Which is the make given to the database management system which is able to handle full text data, image data, audio and video?
a. full media
b. graphics media
c. multimedia
d. hypertext
Question 7:
A record management system
a. can handle many files of information at a time
b. can be used to extract information stored in a computer file
c. always uses a list as its model
d. both a and b
Question 8:
A command that lets you change one or more fields in a record is
a. insert
b. modify
c. lookup
d. none of above
Question 9:
A transparent DBMS
a. can not hide sensitive information from users
b. keeps its logical structure hidden from users
c. keeps its physical structure hidden from users
d. both b and c
Question 10:
A file produced by a spreadsheet
a. is generally stored on disk in an ASCII text fromat
b. can be used as is by the DBMS
c. both a and b
d. none of the above
Answers:
1.b 2.e 3.d 4.b 5.d 6.c 7.b 8.b 9.c 10.a
Ques 1:
Which of the following is not true of the traditional approach to information processing
a. there is common sharing of data among the various applications
b. it is file oriented
c. programs are dependent on the file
d. it is inflexible
e. all of the above are true
Question 2:
Which of the following hardware component is the most important to the operation of database management system?
a. high resolution video display
b. printer
c. high speed, large capacity disk
d. plotter
e. mouse
Question 3:
Generalized database management system do not retrieve data to meet routine request
a. true
b. false
Question 4:
Batch processing is appropriate if
a. large computer system is available
b. only a small computer system is avilbale
c. only a few transactions are involved
d. all of the above
e. none of the above
Question 5:
Large collection of files are called
a. fields
b. records
c. database
d. sectors
Question 6:
Which of the following is not a relational database?
a. dBase IV
b. 4th Dimension
c. FoxPro
d. Reflex
Question 7:
In order to use a record management system
a. you need to understand the low level details of how information is stored
b. you need to understand the model the record management system uses
c. bother a and b
d. none of the above
Question 8:
Sort/Report generators
a. are faster than index/report generators
b. require more disk space than indexed/report generators
c. do not need to sort before generating report
d. both a and b
Question 9:
If a piece of data is stored in two places in the database, then
a. storage space is wasted
b. changing the data in one spot will cause data inconsistency
c. in can be more easily accessed
d. both and b
Question 10:
An audit trail
a. is used to make backup copies
b. is the recorded history of operations performed on a file
c. can be used to restore lost information
d. none of the aobve
Answers:
1.a 2.c 3. b 4.e 5.c 6.d 7.b 8.b 9.d 10.b
Ques 1:
The relational database environment has all of the following components except
a. users
b. separate files
c. database
d. query languages
e. database
Question 2:
Database management systems are intended to
a. eliminate data redundancy
b. establish relationship among records in different files
c. manage file access
d. maintain data integrity
e. all of the above
Question 3:
One approach to standardization storing of data?
a. MIS
b. structured programming
c. CODASYL specification
d. none of the above
Question 4:
The language used application programs to request data from the DBMS is
referred to as the
a. DML
b. DDL
c. query language
d. any of the above
e. none of the above
Question 5:
The highest level in the hierarchy of data organization is called
a. data bank
b. data base
c. data file
d. data record
Question 6:
Choose the RDBMS which supports full fledged client server application development
a. dBase V
b. Oracle 7.1
c. FoxPro 2.1
d. Ingress
Question 7:
Report generators are used to
a. store data input by a user
b. retrieve information from files
c. answer queries
d. both b and c
Question 8:
A form defined
a. where data is placed on the screen
b. the width of each field
c. both a and b
d. none of the above
Question 9:
A top-to-bottom relationship among the items in a database is established by a
a. hierarchical schema
b. network schema
c. relational schema
d. all of the above
Question 10:
The management information system (MIS) structure with one main computer
system is called a
a. hierarchical MIS structure
b. distributed MIS structure
c. centralized MIS structure
d. decentralized MIS structure
Answers:
1.b 2.e 3.c 4.a 5.b 6. b 7.d 8.a 9.a 10.c