Database Management System-4

Multiple Choice Questions (MCQs)

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1   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)   both A and B
    (D)   none of the above
2   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
3   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 A and B
4   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 above
5   The relational database environment has all of the following components except
    (A)   users
    (B)   separate files
    (C)   database
    (D)   query languages
6   Database management systems are intended to
    (A)   eliminate data redundancy
    (B)   establish relationship among records in different files
    (C)   manage file access
    (D)   all of the above
7   One approach to standardization storing of data
    (A)   MIS
    (B)   structured programming
    (C)   CODASYL specification
    (D)   none of the above
8   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
9   The highest level in the hierarchy of data organization is called
    (A)   data bank
    (B)   data base
    (C)   data file
    (D)   data record
10   Choose the RDBMS which supports full fledged client server application development
    (A)   dBase V
    (B)   Oracle 7.1
    (C)   FoxPro 2.1
    (D)   Ingress
11   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
12   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
13   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
14   DBA stands for:
    (A)   Database associated
    (B)   Database administrator
    (C)   Database application
    (D)   None of these
15   DBMS stands for:
    (A)   Database associated
    (B)   Database administrator
    (C)   Database application
    (D)   Database management system
16   Which means a place where data can be stored in a structured manner?
    (A)   CPU
    (B)   Database
    (C)   ALU
    (D)   All of these
17   A database is a complex ______:
    (A)   Data structure
    (B)   Memory
    (C)   Both
    (D)   None
18   The set of data available to the user, the so-called:
    (A)   Start-user data
    (B)   End-user data
    (C)   Database
    (D)   None of these
19   How is describing the end-user data:
    (A)   Memory
    (B)   CPU
    (C)   ALU
    (D)   Data
20   DBMS is to impose a logical and structured organization on:
    (A)   Register
    (B)   Data
    (C)   Memory
    (D)   None of these
21   How many basic operations performed in DBMS?
    (A)   1
    (B)   2
    (C)   3
    (D)   4
22   Basic operation performed in DBMS is:
    (A)   Management of data in the database
    (B)   Management of user associated with database
    (C)   Both
    (D)   None
23   _______is a program or set of program that interacts with the database at some point in its execution:
    (A)   A database system
    (B)   A database application
    (C)   Both
    (D)   None
24   ________is a collection of application programs that interacts with the database along with DBMS:
    (A)   A database system
    (B)   A database application
    (C)   Both
    (D)   None
25   ACID stands for:
    (A)   Atomicity, consistency, isolation, and durability
    (B)   Atomicity, command, integrity, and data
    (C)   Atomicity, control, integrated, and direct
    (D)   None of these
26   A DBMS provides users with the conceptual representation of:
    (A)   Register
    (B)   Data
    (C)   Logical view
    (D)   Physical view
27   Which structure of data clearly is one of the main features of the database approach?
    (A)   Logical view
    (B)   Physical view
    (C)   Both
    (D)   None
28   A _____view of data expresses the way a user thinks about data
    (A)   Logical view
    (B)   Physical view
    (C)   Both
    (D)   None
29   A physical view of data refers to the way data is handled at a_____ its storage and retrieval:
    (A)   High level
    (B)   Low level
    (C)   Medium level
    (D)   All of these
30   In logical and physical view of data the set of principles that defines a data model may be divided into how many parts:
    (A)   1
    (B)   2
    (C)   3
    (D)   4
31   In logical and physical view of data the set of principles that defines a data model may be divided into which part:
    (A)   Data definition
    (B)   Data manipulation
    (C)   Data integrity
    (D)   All of these
32   The overall description of a database is called______:
    (A)   Data definition
    (B)   Data manipulation
    (C)   Data integrity
    (D)   Database schema
33   Which is proper subset designed to support ‘views’ belonging to different classes of users in order to hid or protect information:
    (A)   Schema
    (B)   Subschema
    (C)   Non-schema
    (D)   None-subschema
34   A data dictionary is a repository that manages _____:
    (A)   Database
    (B)   Memory
    (C)   Metadata
    (D)   All of these
35   Which languages are used to define and query a database?
    (A)   Database
    (B)   Memory
    (C)   Metadata
    (D)   All of these
36   DDL stand for:
    (A)   Data definition language
    (B)   Data description languages
    (C)   Data design languages
    (D)   Database dictionary languages
37   Which are the not most frequently used DDL statements?
    (A)   CREATE
    (B)   DROP
    (C)   ALTER
    (D)   None of these
38   VDL stand for:
    (A)   View data languages
    (B)   View design languages
    (C)   View definition languages
    (D)   View done languages
39   SDL stands for
    (A)   Stand definition languages
    (B)   Storage definition languages
    (C)   Select definition languages
    (D)   System definition languages
40   The DDL is used to specify the_____:
    (A)   Conceptual schemas
    (B)   Internal schemas
    (C)   Both
    (D)   None
41   The SDL is used to specify the_______:
    (A)   Conceptual schemas
    (B)   Internal schemas
    (C)   Both
    (D)   None
42   DML stands for:
    (A)   Data description languages
    (B)   Data design languages
    (C)   Database dictionary languages
    (D)   Data manipulation languages
43   Which is used for data retrieval from the database?
    (A)   DDL
    (B)   DML
    (C)   SDL
    (D)   VDL
44   Which is used to specify the user views and their mappings to the conceptual schema?
    (A)   DDL
    (B)   DML
    (C)   SDL
    (D)   VDL
45   What are the types of DML?
    (A)   Low level
    (B)   High level
    (C)   Procedural DML
    (D)   All of these
46   Which is requires a user to specify what data is needed and how to get it:
    (A)   Low level
    (B)   Procedural DML
    (C)   Both
    (D)   None
47   Data is manipulated by procedure calls to subroutines provided by a_____:
    (A)   Data
    (B)   DBMS
    (C)   Register
    (D)   All of these
48   The programming languages are called:
    (A)   Sublanguages
    (B)   Host languages
    (C)   VDL
    (D)   DDL
49   The DML is called:
    (A)   Sublanguages
    (B)   Host languages
    (C)   VDL
    (D)   DDL
50   A database management system is very complex_____:
    (A)   Art
    (B)   Command
    (C)   Languages
    (D)   System
51   How many levels of abstraction in DBMS:
    (A)   2
    (B)   3
    (C)   4
    (D)   5
52   Which are the three levels of abstraction?
    (A)   Physical
    (B)   Logical
    (C)   External
    (D)   All of these
53   Q252.Which are the types of data independence:
    (A)   Physical
    (B)   Logical
    (C)   Both
    (D)   All of these
54   Which is the transformation of requests and results between different levels of abstraction?
    (A)   Evaluation
    (B)   Mapping
    (C)   Compiler
    (D)   Precompiler
55   Which mapping exists between the conceptual and internal levels?
    (A)   Conceptual
    (B)   Internal
    (C)   Both
    (D)   None
56   The related and interconnected software components of a DBMS are described by the _______:
    (A)   Logical architecture
    (B)   Physical architecture
    (C)   Both
    (D)   None
57   Which are the types of physical DBMS architecture can be split:
    (A)   Back end
    (B)   Front end
    (C)   Both
    (D)   None
58   In which end is really just any application that runs on top of the DBMS and acts as a user interface:
    (A)   Back end
    (B)   Front end
    (C)   Both
    (D)   None
59   Data are stored in________ as database:
    (A)   Data files
    (B)   Data dictionary
    (C)   Database
    (D)   Data administrator
60   RAD stands for:
    (A)   Rotate application development
    (B)   Register application development
    (C)   Related application development
    (D)   Rapid application development
61   DA stands for:
    (A)   Data administrator
    (B)   Database active
    (C)   Define application
    (D)   All of these
62   Which is the person responsible for overall control of the database system?
    (A)   DDL
    (B)   DBMS
    (C)   DBA
    (D)   SDL
63   DBA stands for:
    (A)   Database maintenance
    (B)   Database administrator
    (C)   Database backup
    (D)   Database designer
64   Transaction is an action used to perform some manipulation on data stored in the____:
    (A)   Memory
    (B)   Record
    (C)   Database
    (D)   All of these
65   How many features of a DBMS which provide a number of advantages for data management:
    (A)   1
    (B)   3
    (C)   5
    (D)   7
66   Which is a DBMS keeps back-up copies of the database:
    (A)   Backup
    (B)   Recovery
    (C)   Both
    (D)   None
67   In which the database can be restored up to the last consistent state after the system failure:
    (A)   Backup
    (B)   Recovery
    (C)   Both
    (D)   None
68   Which are the not user in End-user:
    (A)   Naïve users
    (B)   Casual users
    (C)   Sophisticated user
    (D)   All of these
69   Which are the not features of a DBMS which provide a number of advantages for data management:
    (A)   DML
    (B)   DDL
    (C)   SDL
    (D)   None of these
70   Minimal data redundancy means improved _________:
    (A)   Data independence
    (B)   Data consistency
    (C)   Data integration
    (D)   Data sharing
71   Who access the database occasionally and have different needs each time:
    (A)   Naïve users
    (B)   Casual users
    (C)   Sophisticated user
    (D)   All of these
72   Who interact with the system without writing a program?
    (A)   Naïve users
    (B)   Casual users
    (C)   Sophisticated user
    (D)   All of these
73   Who interact with the system by invoking one of the permanent application programs?
    (A)   Naïve users
    (B)   Casual users
    (C)   Sophisticated user
    (D)   All of these
74   The main interface that a native user uses is a form interface using___:
    (A)   DDL
    (B)   GUI
    (C)   OLAP
    (D)   DML
75   The provision of _______ is a major objective for database system:
    (A)   Data independence
    (B)   Data consistency
    (C)   Data integration
    (D)   Data sharing
76   Which is requested to carry out various operations, such as insert, delete, update and retrieval on the database by the user?
    (A)   DBA
    (B)   DBMS
    (C)   DBS
    (D)   DDL
77   ____ translates into low-level instruction that a query processor understands:
    (A)   DBA
    (B)   DBMS
    (C)   DBS
    (D)   DDL
78   Retrieval of data is done by using a ____:
    (A)   Stack
    (B)   Query
    (C)   Linked list
    (D)   All of these
79   DML is a language by which user accesses or manipulates the ________:
    (A)   Data model
    (B)   Data consistency
    (C)   Data integration
    (D)   Data sharing
80   Which is the central component of the DBMS software that can also be termed as the database control system?
    (A)   Data consistency
    (B)   Data integration
    (C)   Data sharing
    (D)   Data manager
81   Which is stored information about description of data in the database?
    (A)   Data files
    (B)   Data dictionary
    (C)   Database
    (D)   Data administrator
82   Which is installs, configures, troubleshoots and maintains a database system:
    (A)   DBA
    (B)   DDL
    (C)   DML
    (D)   SDL
83   Q284.Which is incorporated to create an appropriate physical database that is transformed by a logical data model:
    (A)   SDL
    (B)   VDL
    (C)   Both
    (D)   None
84   SQL stands for:
    (A)   System query language
    (B)   Sequential query language
    (C)   Sets query languages
    (D)   None of these
85   CSV stands for:
    (A)   Command system values
    (B)   Comma system values
    (C)   Command separated values
    (D)   Comma separated values
86   PDF stands for:
    (A)   Physical data format
    (B)   Portable document format
    (C)   Physical document format
    (D)   Portable data format
87   XML stands for:
    (A)   Xtensible markup languages
    (B)   Xtensible memory languages
    (C)   Both
    (D)   None
88   BLOB stands for:
    (A)   Binary languages Objects
    (B)   Bit large Objects
    (C)   Binary low objects
    (D)   Binary large objects
89   Which is refers to the collection of related data values or items called fields:
    (A)   Record
    (B)   Record blocking
    (C)   Fixed-length record
    (D)   Variable-length record
90   Every record in the same size in bytes the file is constituted of_____:
    (A)   Record
    (B)   Record blocking
    (C)   Fixed-length record
    (D)   Variable-length record
91   _________ is the records in the file are of different sizes:
    (A)   Record blocking
    (B)   Fixed-length record
    (C)   Variable-length record
    (D)   None of these
92   In which circumstances not variable-length record occurs:
    (A)   Mixed files
    (B)   Repeating field
    (C)   Both
    (D)   None
93   Q294.The block containing the record is the unit of data transferred between the________:
    (A)   Main memory and The disk
    (B)   Data and Memory
    (C)   Data and Disk
    (D)   All of these
94   Which is the unit of data transferred?
    (A)   The memory
    (B)   The data
    (C)   The user
    (D)   The block
95   _____is a collection of all occurrences of similar types of records:
    (A)   Data
    (B)   Data item
    (C)   File
    (D)   All of these
96   How many types of recodes in a file-based system:
    (A)   2
    (B)   4
    (C)   6
    (D)   8
97   Which are is not type of recodes in a file-based system:
    (A)   Logical records
    (B)   Physical records
    (C)   Both
    (D)   None
98   Which contain information about a file needed by system programs for accessing file records?
    (A)   File blocks
    (B)   File operations
    (C)   File headers
    (D)   None of these

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