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Introduction to Database System

Introduction to Database System
In SQL, which command(s) is(are) used to create a synonym for a schema object?

CREATE SYNONYM
CREATE SCHEMA
All of the listed here
CREATE SAME

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Introduction to Database System
1:1, 1:N and N:M relationships are also known as HAS-A relationships.

False
True

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Introduction to Database System
The highest level in the hierarchy of data organization is called

database
data record
data file
data bank

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Introduction to Database System
The PROJECT command will create new table that has

both of the listed here
more fields than the original table
more rows than the original table
none of the listed here

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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?

Maximum cardinality
Greater Entity Count (GEC)
Minimum cardinality
ERD

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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.

True
False

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