Q.1 The cost of
reading and writing temporary files while evaluating a query can be reduced by
(A) building indices
(B) pipelining
(C) join ordering
(D) none of the above
Ans: (B)
Q.2 A transaction is
in __________ state after the final statement has been executed.
(A) partially committed
(B) active
(C) committed
(D) none of the above
Ans: (C)
Q.3 In multiple
granularity of locks SIX lock is compatible with
(A) IX
(B) IS
(C) S
(D) SIX
Ans: (B)
Q.4 The statement
that is executed automatically by the system as a side effect of the modification
of the database is
(A) backup
(B) assertion
(C) recovery
(D) trigger
Ans: (D)
Q.5 The normal form
that is not necessarily dependency preserving is
(A) 2NF
(B) 3NF
(C) BCNF
(D) 4NF
Ans: (A)
Q.6 A functional dependency of the form x → y is trivial if AC14/AT11 Database Management Systems.
(A) y ⊆ x
(B) y ⊂ x
(C) x ⊆ y
(D) x ⊂ y
Ans: (A)
Q.7 The normalization
was first proposed by ______________.
(A) Code
(B) Codd
(C) Boyce Codd
(D) Boyce
Ans: (B)
Q.8 The division
operator divides a dividend A of degree m+n by a divisor relation B of degree n
and produces a result of degree
(A) m – 1
(B) m + 1
(C) m * m
(D) m
Ans: (D)
Q.9 Which of the
following is not a characteristic of a relational database model?
(A) Table
(B) Tree like structure
(C) Complex logical relationship
(D) Records
Ans: (B)
Q.10 Assume
transaction A holds a shared lock R. If transaction B also requests for a shared
lock on R.
(A) It will result in a deadlock situation.
(B) It will immediately be rejected.
(C) It will immediately be granted.
(D) It will be granted as soon as it is released by A .
Ans: (C)
Q.11 In E-R Diagram
total participation is represented by
(A) double lines
(B) Dashed lines
(C) single line
(D) Triangle
Ans: (A)
Q.12 The FD A → B ,
DB → C implies
(A) DA → C
(B) A → C
(C) B → A
(D) DB → A
Ans: (A)
Q.13 The graphical
representation of a query is ________.
(A) B-Tree
(B) graph
(C) Query Tree
(D) directed graph
Ans: (C)
Q.14 Union operator
is a :
(A) Unary Operator
(B) Ternary Operator
(C) Binary Operator
(D) Not an operator
Ans: (C)
Q.15 Relations
produced from an E-R model will always be
(A) First normal form.
(B) Second normal form.
(C) Third normal form.
(D) Fourth normal form.
Ans: (A)
Q.16 Manager salary
details are hidden from the employee .This is
(A) Conceptual level data hiding.
(B) External level data hiding.
(C) Physical level data hiding.
(D) None of these.
Ans: (A)
Q.17 Which of the
following is true for network structure?
(A) It is a physical representation of the data.
(B) It allows many to many relationship.
(C) It is conceptually simple.
(D) It will be the dominant database of the future.
Ans: (A)
Q.18 Which two files
are used during 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
Ans: (C )
Q.19 A list consists
of last names, first names, addresses and pin codes. If all people in the list
have the same last name and same pin code a useful key would be
(A) the pin code
(B) the last name
(C) the compound key first name and last name
(D) Tr from next page
Ans: (C )
Q.20 In b-tree the
number of keys in each node is ____ than the number of its children.
(A) one less
(B) same
(C) one more
(D) half
Ans: (A)
Q.21 The drawback of
shadow paging technique are
(A) Commit overhead
(B) Data fragmentation
(C) Garbage collection
(D) All of these
Ans: (D)
Q.72 Which normal
form is considered adequate for normal relational database design?
(A) 2NF (B) 5NF
(C) 4NF (D) 3NF
Ans: (D)
Q.23 Which of the
following addressing modes permits relocation without any change over in the
code?
(A) Indirect addressing
(B) Indexed addressing
(C) PC relative addressing
(D) Base register addressing
Ans: (B)
Q.24 In a multi-user
database, if two users wish to update the same record at the same time, they
are prevented from doing so by
(A) jamming
(B) password
(C) documentation
(D) record lock
Ans: (D)
Q.25 The values of
the attribute describes a particular_____________
(A) Entity set
(B) File
(C) Entity instance
(D) Organization
Ans: (C)
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