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Introduction to Database System

Introduction to Database System
The logical data structure with a one-to-many relationship is a

relational
network
chain
tree

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Introduction to Database System
In order to use a record management system

You need to understand the model the record management system uses.
All of these
Both (a) and (b)
You need to understand the low-level details of how information in stored
None of these

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Introduction to Database System
Data encryption techniques are particularly useful for

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

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Introduction to Database System
The main idea behind computer files is that it is convenient to

access them
store information together
arrange them
create them

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Introduction to Database System
A database management system

can do more than a record management system
allows simultaneous access to multiple files
Both of the listed here
None of the listed here

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Introduction to Database System
In SQL, which command(s) is(are) used to enable/disable a database trigger?

MODIFY USER
ALTER TRIGGER
All of the listed here
CHANGE USER

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