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Introduction to Database System

Introduction to Database System
In the relational model, relationships between relations or tables are created by using:

candidate keys.
determinants.
composite keys.
foreign keys.

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Introduction to Database System
Updating a database means

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

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

False
True

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Introduction to Database System
In a relation, the columns are sometimes called "attributes".

True
False

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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
load the software into your micro¬computer
activate file editor
create a database file

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Introduction to Database System
If you want your database to include methods, you should use a _____ database.

Hierarchical
Object-Oriented
Distributed
Network

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