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Introduction to Database System

Introduction to Database System
Entity instances are associated by relationship classes.

True
False

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Introduction to Database System
A database design may be based on existing data.

True
False

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Introduction to Database System
What is the language used by most of the DBMSs for helping their users to access data?

High level language
Query language
4GL
SQL

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Introduction to Database System
Embedded pointer provide

a physical record key
a secondary access path
an inverted index
All of these
None of these

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Introduction to Database System
In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

instance
subtype
child
parent

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Introduction to Database System
Sort/report generators

do not need to sort before generating a report
require more disk space than index/report generators
are faster than index/report generators
none of the listed here

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