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24008465
C192 / Data Storage
Description
College C192 Databases Quiz on C192 / Data Storage, created by Craig Willey on 29/06/2020.
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c192 databases
college
Quiz by
Craig Willey
, updated more than 1 year ago
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Created by
Craig Willey
over 4 years ago
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Resource summary
Question 1
Question
The hierarchical database model is based on a ____.
Answer
tree structure
lack of a parent segment
lack of a child segment
matrix
Question 2
Question
Database models can be grouped into two categories: conceptual models and ____ models.
Answer
implementation
logical
physical
query
Question 3
Question
A(n) ____ model is independent of both hardware and software.
Answer
conceptual
external
developmental
logical
Question 4
Question
Which model represents the end user’s view of the database?
Answer
Internal
Conceptual
Physical
External
Question 5
Question
What type of relationship is expressed with the phrase “Employee manages Store”?
Answer
1:M
1:1
M:1
M:N
Question 6
Question
The key's role is based on a concept known as ____.
Answer
consistency
availability
determination
uniqueness
Question 7
Question
The ERD is used to graphically represent the ____ database model.
Answer
condensed
physical
logical
conceptual
Question 8
Question
A ____ relationship exists when an association is maintained within a single entity.
Answer
unary
ternary
binary
weak
Question 9
Question
A ____ relationship exists when two entities are associated.
Answer
unary
binary
ternary
weak
Question 10
Question
The extended entity relationship model (EERM) is sometimes referred to as the ____.
Answer
entity relationship model
enhanced entity relationship model
entity clustering relationship model
extended entity relationship diagram
Question 11
Question
The property of ____ enables an entity subtype to inherit the attributes and relationships of the supertype.
Answer
subtype discriminator
inheritance
specialization hierarchy
entity supertype
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