Database MCQ - ER-model & Relational Model

6:  

A report generator is used to

A.

Update files.

B.

Print files on paper

C.

Data entry.

D.

Delete files.

 
 

Option: B

Explanation :

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John Doe said: (5:50am on Wednesday 17th January 2018)
The report generator takes the data from databases and gives you in the document format.

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7:  

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

 
 

Option: D

Explanation :

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8:  

A relational database developer refers to a record as

A.

A criteria.

B.

A relation.

C.

A tuple.

D.

An attribute.

 
 

Option: C

Explanation :

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9:  

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

 
 

Option: B

Explanation :

 In relational model  data is stored in tables and if we talk about data independence it is one of the major feature of DBMS  which  holds in all DBMS models.

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10:  

 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.

 
 

Option: C

Explanation :

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kamesh saini said: (3:46pm on Thursday 16th July 2015)
what is Modelling independent?

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Syllabus covered in this section is-

  • E- R diagrams and their transformation, to relational design
  •  Normalization - l NF, 2NF, 3NF
  •  BCNF and 4NF.Limitations of 4NF and BCNF
  • SQL :Data Definition Language (DDL) , Data Manipulation Language (DML), Data Control Language· (DCL)-
  • Database objects like Views, indexes, sequences, synonyms, Data dictionary
  • Database Concepts
  • Data Models,
  • Design of Relational Database
  • Query Processing and Optimization
  • Centralized and Distributed Database
  •  Security.
  •  Concurrency and Recovery in Centralized and Distributed Database Systems,
  • Object Oriented Database Management
  • Systems (Concepts, Composite objects, Integration with ROBMS applications),

 

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  • Pre PhD Entrance Exam
  • DOEACC Exams
  • Kendriya Vidyalaya Sangathan Entrance Exam

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