RDBMS MCQ

RDBMS MCQ

  • Sharad Jaiswal
  • 22nd Nov, 2021

We have listed here the best RDBMS MCQ Questions for your basic knowledge of RDBMS. This RDBMS MCQ Test contains 20+ RDBMS Multiple Choice Questions. You have to select the right answer to every question to check your final preparation for the RDBMS MCQ Interview or Exams.

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Practice Best RDBMS MCQ Questions;

1) A relational database consists of a collection is

  • A. Keys
  • B.Tables
  • C.Fields
  • D.Records

2) ER model is used in______

  • A. Applications
  • B.Physical refinement
  • C.Schema refinement
  • D.Conceptual database

3) The most open source RDBMS is

  • A. MySQL
  • B.Oracle
  • C.Microsoft Access
  • D.Microsoft SQL Server

4) Minimal superkeys are called______

  • A. Candidate key
  • B.Primary key
  • C.Superset key
  • D.Unique key

5) The 'NULL' represents

  • A. 0
  • B.Blank space
  • C.Absence of any value
  • D.None of the above

6) What is the full form of ACID?

  • A. Atomicity, Constant, Isolation, Durability.
  • B.Atomicity, Consistency, Indexing, Durability.
  • C.Atomicity, Consistency, Isolation, Duration.
  • D.Atomicity, Consistency, Isolation, Durability.

7) Top-to-bottom relationship among the items in a database is established by

  • A. Relational schema
  • B.Hierarchical schema
  • C.Network schema
  • D.All of the above

8) Entity is a

  • A. Model of relation
  • B.Object of relation
  • C.Thing in real world
  • D.Present working model

9) The language used application programs to request data from the DBMS:

  • A. DML(Data Manipulation Language)
  • B.DDL(Data Definition Language)
  • C.Query-language
  • D.None of the above

10) Four DML commands

  • A. CREATE, UPDATE, DELETE, SELECT
  • B.CREATE, ALTER, DELETE, SELECT
  • C.INSERT, UPDATE, DROP, SELECT
  • D.INSERT, MODIFY, DELETE, SELECT

11) Query language is a language in which a user?

  • A. Stores
  • B.Requests
  • C.Response
  • D.Represents

12) Which language can a user request information from a database

  • A. Compiler
  • B.Query
  • C.Relational
  • D.Structural

13) In SQL the cross-tabs are created using

  • A. Dice
  • B.Slice
  • C.Pivot
  • D.All of the above

14) Which one of the following attribute can be taken as a primary key?

  • A. Id
  • B.Name
  • C.Street
  • D.Department

15) Which SQL keyword is used to return only different values?

  • A. GROUP
  • B.COUNT
  • C.QUERY
  • D.DISTINCT

16) The relational model is concerned________

  • A. Data structure
  • B.Data integrity
  • C.Data manipulation
  • D.All of the above

17) In relational model the row of table is known as

  • A. Entity field
  • B.Tuple
  • C.Relation
  • D.Attribute

18) The Primary key should be chosen such that its attribute values are never

  • A. Edit
  • B.Update
  • C.Changed
  • D.Modified

19) The term attribute refers to a__________.

  • A. Key
  • B.Tuple
  • C.Column
  • D.Record

20) Union of primary keys of the related entity sets becomes are___________

  • A. Foreign key
  • B.Super Key
  • C.Primary key
  • D.Candidate key

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