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Introduction to Database System

Introduction to Database System
An operation that will increase the length of a list is

Modify
All of the listed here
Insert
Look-up

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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
Greater Entity Count (GEC)
ERD
Maximum cardinality

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Introduction to Database System
Which command(s) is(are) used to enable/disable/drop an integrity constraint in SQL?

ALTER TABLE
DEFINE TABLE
All of the listed here
MODIFY TABLE

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Introduction to Database System
In SQL, which command is used to select only one copy of each set of duplicable rows

SELECT DIFFERENT
None of these
All of these
SELECT UNIQUE
SELECT DISTINCT

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Introduction to Database System
Updating a database means

reorganizing the database
all of the listed here
revising the file structure
modifying or adding record occurrences

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Introduction to Database System
In a relational schema, each tuple is divided into fields called

Domains
All of the listed here
Queries
Relations

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