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Introduction to Database System

Introduction to Database System
A recursive relationship is a relationship between an entity and ________ .

a subtype entity
itself
an instance entity
an archetype entity

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Introduction to Database System
The logical data structure with a one-to-many relationship is a

tree
chain
relational
network

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Introduction to Database System
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.

True
False

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

All of the listed here
CREATE SYNONYM
CREATE SAME
CREATE SCHEMA

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Introduction to Database System
Which language has recently become the de-facto standard for interfacing application programs with relational database system?

Oracle
dBASE
4GL
SQL
None of these

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Introduction to Database System
In a relation, the order of the rows matters.

False
True

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