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Introduction to Database System

Introduction to Database System
A _____ Contains fields of data about one entity.

None of these
Record
File
Document
Fields

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Introduction to Database System
Data security threats include

hardware failure
fraudulent manipulation of data
privacy invasion
all of the listed here

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Introduction to Database System
A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.

False
True

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

Minimum cardinality
Maximum cardinality
ERD
Greater Entity Count (GEC)

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Introduction to Database System
The language used in application programs to request data from the DBMS is referred to as the

DDL
query language
All of the listed here
DML

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

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

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