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Introduction to Database System

Introduction to Database System
If attributes A and B determine attribute C, then it is also true that:

C is a determinant.
B →
A →
(A,B) is a composite determinant.

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Introduction to Database System
Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity?

Subtype entity
Instance entity
Supertype entity
Archetype entity

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Introduction to Database System
The index consists of

All of these
None of these
a list of keys
pointers to the master list
both (a) and (b)

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Introduction to Database System
In the DBM approach, application programs perform the

processing functions
access control
all of the listed here
storage function

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Introduction to Database System
Which of the following indicates the maximum number of entities that can be involved in a relationship?

Greater Entity Count (GEC)
ERD
Maximum cardinality
Minimum cardinality

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Introduction to Database System
In which of the following is a single-entity instance of one type related to many entity instances of another type?

One-to-One Relationship
Many-to-Many Relationship
Composite Relationship
One-to-Many Relationship

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