Database Management System (DBMS)
Questions 1 to 10
1.
|
A
collection of data designed to be used by different people is called
a/an
|
||||||||||
2.
|
Which of
the following is the oldest database model?
|
||||||||||
3.
|
Which of
the following schemas does define a view or views of the database for
particular users?
|
||||||||||
4.
|
Which of
the following is an attribute that can uniquely identify a row in a table?
|
||||||||||
5.
|
Which of
the following is the process of selecting the data storage and data access
characteristics of the database?
|
||||||||||
6.
|
Which of
the following terms does refer to the correctness and completeness of the
data in a database?
|
||||||||||
7.
|
The relationship
between DEPARTMENT and EMPLOYEE is a
|
||||||||||
8.
|
A table
can be logically connected to another table by defining a
|
||||||||||
9.
|
If the
state of the database no longer reflects a real state of the world that the
database is supposed to capture, then such a state is called
|
||||||||||
10.
|
Ensuring
isolation property is the responsibility of the
|
Answers
1.
|
Answer : (b)
Reason: A collection of data designed to be used by
different people is called a data base.
|
2.
|
Answer : (d)
Reason: Network Model is the oldest database model.
|
3.
|
Answer : (d)
Reason: External Schema define a view or views of
the database for particular users.
|
4.
|
Answer : (b)
Reason: Candidate Key following is an attribute that
can uniquely identify a row in a table.
|
5.
|
Answer : (b)
Reason: Physical database design is the process of
selecting the data storage and data access characteristics of the database.
|
6.
|
Answer : (e)
Reason: Data integrity refer to the correctness and
completeness of the data in a database.
|
7.
|
Answer : (b)
Reason: The relationship between DEPARTMENT and
EMPLOYEE is a one-to-many
relationship.
|
8.
|
Answer : (c)
Reason: A table can be logically connected to
another table by defining a Primary Key.
|
9.
|
Answer : (e)
Reason: If the state of the database no longer
reflects a real state of the world that the database is supposed to capture,
then such a state is called in
consistent state.
|
10.
|
Answer : (b)
Reason: Ensuring isolation property is the
responsibility of the concurrency-control component of the DBMS
|
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The answer to question 2 should be the hierarchical model as the network model was designed by the CODASYL to improve the restriction of data having only one parent in the hierarchical model. It did not gain ground for commercial reasons and complexity.
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