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Introduction to Database System

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

True
False

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Introduction to Database System
Which of the following is a serious problem of file management systems?

program dependence
difficult to update
lack of data independence
All of these
data redundancy

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Introduction to Database System
Relationship classes are associations between entity classes.

True
False

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Introduction to Database System
In a database, data is stored in spreadsheets which have rows and columns.

True
False

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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)
Minimum cardinality
ERD
Maximum cardinality

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Introduction to Database System
Properties that describe the characteristics of entities are called:

relationships.
identifiers.
entities.
attributes.

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