Q.51 The language which has recently become the defacto standard for interfacing application programs with relational database system is
(A) Oracle.
(B) SQL.
(C) DBase.
(D) 4GL.
Ans: B
Q.52 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.
Ans: D
Q 53. Each tablespace in an Oracle database consists of one or more files called
a) Files
b) name space
c) datafiles
d) PFILE
Q.54 In an E-R diagram an entity set is represented by a
(A) rectangle.
(B) ellipse.
(C) diamond box.
(D) circle.
Ans: A
Q55. A data dictionary is a repository that manages _____A. Memory B. Metadata C. Spell Checker D. Data Validator Answer : Metadata [Option : B] |
Q56. A report generator is used to
(A) update files.
(B) print files on paper.
(C) data entry.
(D) delete files.
Ans: B
Q.57. 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
Answer: c
Q 58. The property/properties of a database is/are:
(A) It is an integrated collection of logically related records.
(B) It consolidates separate files into a common pool of data records.
(C) Data stored in a database is independent of the application programs using it.
(D) All of the above.
Ans: D
Q.59. The DBMS language component which can be embedded in a program is
(A) The data definition language (DDL).
(B) The data manipulation language (DML).
(C) The database administrator (DBA).
(D) A query language.
Ans: B
Q.60. A relational database developer refers to a record as
(A) Criteria.
(B) a relation.
(C) a tuple.
(D) an attribute.
Ans: C
Q.61. . 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 mentioned
Answer: a
Q.62. 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.
Ans: B
Q.63. Conceptual design
(A) is a documentation technique.
(B) needs data volume and processing frequencies to determine the size of the database.
(C) involves modelling independent of the DBMS.
(D) is designing the relational model.
Ans:C
Q.64. The method in which records are physically stored in a specified order according to a key field in each record is
(A) hash.
(B) direct.
(C) sequential.
(D) all of the above.
Ans: A
Q.65. A subschema expresses
(A) the logical view.
(B) the physical view.
(C) the external view.
(D) all of the above.
Ans: C
Q.66. Count function in SQL returns the number of
(A) values.
(B) distinct values.
(C) groups.
(D) columns.
Ans: A
Q.67. 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.
Ans: B
Q.68. An advantage of the database management approach is
(A) data is dependent on programs.
(B) data redundancy increases.
(C) data is integrated and can be accessed by multiple programs.
(D) none of the above.
Ans: C
Q.69 A DBMS query language is designed to
(A) support end-users who use English-like commands.
(B) support in the development of complex applications software.
(C) specify the structure of a database.
(D) all of the above.
Ans: D
Q.70. Transaction processing is associated with everything below except
(A) producing detail, summary, or exception reports.
(B) recording a business activity.
(C) confirming an action or triggering a response.
(D) maintaining data.
Ans: C
Q.71. It is possible to define a schema completely using
(A) VDL and DDL.
(B) DDL and DML.
(C) SDL and DDL.
(D) VDL and DML.
Ans: B
Q.72. The method of access which uses key transformation is known as
(A) direct.
(B) hash.
(C) random.
(D) sequential.
Ans: B
Q.73. Data independence me Ans
(A) data is defined separately and not included in programs.
(B) programs are not dependent on the physical attributes of data.
(C) programs are not dependent on the logical attributes of data.
(D) both (B) and (C).
Ans: D both (B) and (C)
Q.74. The statement in SQL which allows changing the definition of a table is
(A) Alter.
(B) Update.
(C) Create.
(D) select.
Ans: A.
a) dBase V
b) Oracle 7.1
c) FoxPro 2.1
d) Ingress
a) MIS
b) Structured programming
c) CODASYL specification
d) None of the mentioned
a) Data bank
b) Data base
c) Data file
d) Data record
A) Keys
B) Translators
C) Program
D) Language Activity
Answer C) Program
79. In a relational schema, each tuple is divided into fields called
A) Relations
B) Domains
C) Queries
D) All of the above
Answer B) Domains
80. In an ER model, ……………. is described in the database by storing its data.
A) Entity
B) Attribute
C) Relationship
D) Notation
Answer A) Entity
81. DFD stands for
A) Data Flow Document
B) Data File Diagram
C) Data Flow Diagram
D) Non of the above
Answer C) Data Flow Diagram
82. 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
Answer A) Hierarchical schema
83. ……………… table store information about database or about the system.
A) SQL
B) Nested
C) System
D) None of these
Answer C) System
84. …………..defines the structure of a relation which consists of a fixed set of attribute-domain pairs.
A) Instance
B) Schema
C) Program
D) Super Key
Answer B) Schema
85. ……………… clause is an additional filter that is applied to the result.
A) Select
B) Group-by
C) Having
D) Order by
Answer C) Having
86. A logical schema
A) is the entire database
B) is a standard way of organizing information into accessible parts.
C) Describes how data is actually stored on disk.
D) All of the above
Answer B) is a standard way of organizing information into accessible parts.
87. ………………… is a full form of SQL.
A) Standard query language
B) Sequential query language
C) Structured query language
D) Server side query language
Answer C) Structured query language
88) A relational database developer refers to a record as
A. a criteria
B. a relation
C. a tuple
D. an attribute
Answer C. a tuple
89) ………. keyword is used to find the number of values in a column.
A. TOTAL
B. COUNT
C. ADD
D. SUM
Answer B. COUNT
90) An advantage of the database management approach is
A. data is dependent on programs
B. data redundancy increases
C. data is integrated and can be accessed by multiple programs
D. none of the above
Answer C. data is integrated and can be accessed by multiple programs
91) The collection of information stored in a database at a particular moment is called as ……
A. schema
B. instance of the database
C. data domain
D. independence
Answer B. instance of the database
92) Data independence means
A. data is defined separately and not included in programs.
B. programs are not dependent on the physical attributes of data
C. programs are not dependent on the logical attributes of data
D. both B and C
Answer D. both B and C
93) A ……… is used to define overall design of the database
A. schema
B. application program
C. data definition language
D. code
Answer A. schema
94) Key to represent relationship between tables is called
A. primary key
B. secondary key
C. foreign key
D. none of the above
Answer C. foreign key
95) Grant and revoke are ……. statements.
A. DDL
B. TCL
C. DCL
D. DML
Answer C. DCL
96) DBMS helps achieve
A. Data independence
B. Centralized control of data
C. Neither A nor B
D. Both A and B
Answer D. Both A and B
97) ………. command can be used to modify a column in a table
A. alter
B. update
C. set
D. create
98. 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) Storage space is wasted & Changing the data in one spot will cause data inconsistency
99. 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 mentioned
100. Large collection of files are called ____________
a) Fields
b) Records
c) Database
d) Sectors
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