The RDBMS terminology for a row is

Tuple
Relation
Attribute
Degree
      _____________________________________________________________________________________
A DBMS query language is designed to 

Support end users who use English-like commands
Support in the development of complex applications software
Specify the structure of a database
All of the above
      _____________________________________________________________________________________
In SQL, testing whether a subquery is empty is done using 

Distinct
Unique
Null
Exists
      _____________________________________________________________________________________
Relations produced from an E-R model will always be 

First normal form
Second normal form
Third normal form
Fourth normal form
      _____________________________________________________________________________________
The database schema is written in 

HLL
DML
DDL
DCL
      _____________________________________________________________________________________
An entity set that does not have sufficient attributes to form a primary key is a

Strong entity set
weak entity set
Simple entity set
Primary entity set
      _____________________________________________________________________________________
Which level of Abstraction describes what data are stored in the Database?

Physical level
View level
Abstraction level
Logical level
      _____________________________________________________________________________________
Which of the following is a low level operator?

Insert
Update
Delete
Directory
      _____________________________________________________________________________________
Which of the following statements is true, when structure of database file with 20 records is modified

? EOF ( ) Prints T
? BOF ( ) Prints F
? BOF ( ) Prints T
? EOF ( ) Prints F
      _____________________________________________________________________________________
If data are stored sequentially on a magnetic tape,they are ideal for

On line application
Batch processing application
Spreadsheet application
Decision making application
      _____________________________________________________________________________________
The result of the UNION operation between R1 and R2 is a relation that includes 

All the tuples of R1
All the tuples of R2
All the tuples of R1 and R2
All the tuples of R1 and R2 which have common columns
      _____________________________________________________________________________________
The method in which records are physically stored in a specified order according to a key field in each record is 

Hash
Direct
Sequential
All of the above
      _____________________________________________________________________________________
The default level of consistency in SQL is 

Repeatable read
Read committed
Read uncommitted
Serializable
      _____________________________________________________________________________________
Data Mining uses ________, ________ and ________ to build effective predictive model.
(i) Data set
(ii) Information set
(iii) Input set
(iv) Process set
(v) Output set
(vi) Test set


(i), (ii) and (iv)
(ii), (iv) and (v)
(i), (v) and (vi)
(ii), (iii) and (v)
      _____________________________________________________________________________________
Which of the following is not a consequence of concurrent operations? 

Lost update problem
Update anomaly
Unrepeatable read
Dirty read
      _____________________________________________________________________________________
Data security threats include

Privacy invasion
Hardware failure
Fraudulent manipulation of data
Encryption and decryption
      _____________________________________________________________________________________
The relational model feature is that there 

Is no need for primary key data
Is much more data independence than some other database models.
Are explicit relationships among records.
Are tables with many dimensions
      _____________________________________________________________________________________
A lack of normalization can lead to which one of the following problems? 

Insertion problems
Deadlock
Lost updates
Deferred updates
      _____________________________________________________________________________________
Assume transaction A holds a shared lock R. If transaction B also requests for a shared lock on R. 

It will result in a deadlock situation.
It will immediately be rejected.
It will immediately be granted.
It will be granted as soon as it is released by A.
      _____________________________________________________________________________________
A B tree used as an index for a large database table has four levels including the root node.If a new is key inserted in this index ,then the maximum number of nodes that could be newly created in the process are

5
4
3
2
      _____________________________________________________________________________________
What deletes the entire file except the file structure ?

ERASE
DELETE
ZAP
PACK
      _____________________________________________________________________________________
The operation which is not considered a basic operation of relational algebra is 

Join
Selection
Union
Cross product
      _____________________________________________________________________________________
A data model is a collection of conceptual tools for describing 

Data and data relationships
Data semantics and consistency constraints
Data,data relationship,data semantics and consistency constraints
None of the above
      _____________________________________________________________________________________
Two phase protocol in a database management is

A concurrency mechanism that is not deadlock free
A recovery protocol used for restoring a database after a crash
Any update to the system log done in two phases
Not effective in database
      _____________________________________________________________________________________
Data item characteristics that are important in data management include 

Width
Language
Spelling
All of these
      _____________________________________________________________________________________
Which diagram provides a formal graphic notation for modelling objects, classes and their relationships to one another ?

Object diagram
Class diagram
Instance diagram
Analysis diagram
      _____________________________________________________________________________________
Specialization is __________ process.

top-down
bottom up
both (A) and (B)
none of these
      _____________________________________________________________________________________
The distinguishable parts of a record are called 

Data
Files
Fields
All of these
      _____________________________________________________________________________________
One solution to the multivalued dependency constraint problem is to 

Split the relation into two relations, each with a single theme
Change the theme
Create a new theme
Add a composite key
      _____________________________________________________________________________________
A table joined with itself is called

Join
Self Join
Outer Join
Equi Join
      _____________________________________________________________________________________
The view of total database content is 

Conceptual view
Internal view
External view
Physical View
      _____________________________________________________________________________________
The physical location of a record is determined by a mathematical formula that transforms a file key into record location in 

A tree file
An indexed file
A hashed file
A sequential file
      _____________________________________________________________________________________
ODBC stands for 

Object Database Connectivity
Oral Database Connectivity
Oracle Database Connectivity
Open Database Connectivity
      _____________________________________________________________________________________
Which of the following is the recovery management technique in DDBMS ?

2PC (Two Phase Commit)
Backup
Immediate update
All of the above
      _____________________________________________________________________________________
Which of the following is an optimistic concurrency control method ?

Validation based
Time stamp ordering
Lock-based
None of these
      _____________________________________________________________________________________
Which allocation scheme would work best for a file system implemented on a device that can only be accessed sequentially,a tape driver,for instance?

Contiguous allocation
Non contiguous allocation
Indexed allocation
None of the above
      _____________________________________________________________________________________
A form can be used to 

Modify records
Delete records
Format printed output
All of these
      _____________________________________________________________________________________
A data mart contain

Summarized data
De normalised data
Aggregate departmental data
All of these
      _____________________________________________________________________________________
The concept of locking can be used to solve the problem of 

Deadlock
Lost update
Inconsistent
All of the above
      _____________________________________________________________________________________
Data integrity control 

Is used to set upper and lower limits on numeric data
Requires the use of passwords to prohibit unauthorized access to the file
Has the data dictionary keep the date and time of last access last back-up, and most recent modification for all files
All of the above
      _____________________________________________________________________________________
Every BCNF decomposition is

Dependency preserving
Not dependency preserving
Need be dependency preserving
None of these
      _____________________________________________________________________________________
Which of the following is the result of a SELECT statement?

TRIGGER
INDEX
TABLE
None of these
      _____________________________________________________________________________________
Which of the following is another name for weak entity? 

Child
Owner
Dominant
All of the above
      _____________________________________________________________________________________
Data independency in DBMS is known as

Data modeling
Data hiding
Data capturing
Data consistency
      _____________________________________________________________________________________
Which command is the fastest among the following ?

COPY TO <NEW FILE>
COPY STRUCTURE TO <NEW FILE>
COPY FILE <FILE 1> <FILE 2>
COPY TO MFILE-DAT DELIMITED
      _____________________________________________________________________________________
What is a relationship called when it is maintained between two entities? 

Unary
Binary
Ternary
Quaternary
      _____________________________________________________________________________________
Which normal form is considered adequate for relational database design? 

2NF
3NF
4NF
BCNF
      _____________________________________________________________________________________
Decomposition help in eliminating some of the problems of bad design

Redundancy
Inconsistencies
Anomalies
All of the above
      _____________________________________________________________________________________
Which possibility among the following is invalid in case of data flow diagram? 

A process having inbound data flows more than outbound data flows
A data flow between two processes
A data flow between the data stores
A data store having more than one inbound data flows
      _____________________________________________________________________________________
Which of the following concurrency control schemes is not based on the serializability property? 

Two – phase locking
Graph-based locking
Time-stamp based locking
None of these
 
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