Hello Friends,this particular section is well focused on the Frequently asked DBMS Fundamentals MCQs in the various competitive exam.The set of questions are very basic and easily understandable by reader.we have kept the question hardness level to very basic.

 

1
. Natural join is equal to?
  • Cartesian Product
  • Combination of Union and Cartesian product
  • Combination of selection and Cartesian product
  • Combination of projection and Cartesian product
2
. Which one of the following is not true for a view:
  • View is derived from other tables.
  • View is a virtual table.
  • A view definition is permanently stored as part of the database.
  • View never contains derived columns.
3
. A primary key if combined with a foreign key creates
  • Parent-Child relationship between the tables that connect them.
  • Many to many relationship between the tables that connect them.
  • Network model between the tables that connect them.
  • None of the above.
4
. In E-R Diagram relationship type is represented by
  • Ellipse
  • Dashed ellipse
  • Rectangle
  • Diamond
5
. A Dada manipulation command the combines the records from one or more tables is called
  • SELECT
  • PROJECT
  • JOIN
  • PRODUCT
6
. To delete a particular column in a relation the command used is:
  • UPDATE
  • DROP
  • ALTER
  • DELETE
7
. The ______ operator is used to compare a value to a list of literals values that have been specified
  • BETWEEN
  • ANY
  • IN
  • ALL
8
. A logical schema
  • is the entire database
  • is a standard way of organizing information into a accessible part
  • describe how data is actually stored on disk
  • none of these
9
. A B-tree of order m has maximum of _____________ children
  • m
  • m+1
  • m-1
  • m/2
10
. _____________ function divides one numeric expression by another and returns the remainder
  • POWER
  • MOD
  • ROUND
  • REMAINDER

 
 
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