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Introduction to Database System

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

data file
data bank
data record
database

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Introduction to Database System
The degree of a relationship refers to the number of entity classes in the relationship.

False
True

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Introduction to Database System
When using a database management system, the first thing that you must do is to

keep a floppy disk in readiness
create a database file
load the software into your micro¬computer
activate file editor

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Introduction to Database System
A recursive relationship is a relationship between an archetype and an instance of that archetype.

True
False

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Introduction to Database System
Which of the following is not characteristic of a relational database model?

treelike structure
records
tables
complex logical relationships

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Introduction to Database System
Data encryption techniques are particularly useful for

protecting data in data communication systems
All of these
None of these
improving data integrity
reducing storage space requirements

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