
ERD DBMS
Authored by ayan khan
Computers
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is ERD used for?
To show flow of data
To show relationships between different data
To explain details of data
All of these
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is not a type of attribute
Derived
Multivalued
Composite
Inherited
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Relationship is shown by which symbol
Dimond
Rectangle
Circle
Eclips
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a student can have only one teacher and one teacher can teach many students what type of relationship is it?
1:1
1:M
M:1
M:N
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a relationship is multiple and optional the cardinality used will be
0 |
| |
0 <—
|<—
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bottom up division of entities is called
Generalisation
Speciallization
Partilization
None of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In disjoint constraint supper entitycan act as
All sub entities
Some sub entities
1 sub entity
None
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