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Introduction to Database System

Introduction to Database System
Which of the following products implemented the CODASYL DBTG model?

R:base
dBase-II
DB2
IDMS

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

Insert
Look-up
Modify
All of the listed here

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Introduction to Database System
An identifier determines the type of relationship that an entity has.

True
False

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Introduction to Database System
In the DBM approach, application programs perform the

storage function
access control
all of the listed here
processing functions

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Introduction to Database System
A candidate key is a determinant that determines all the other columns is a relation.

False
True

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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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