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Introduction to Database System

Introduction to Database System
Composite identifiers consist of two or more attributes.

False
True

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Introduction to Database System
In SQL, the CREATE VIEW command is used

to create a trigger
to recompile a table
to recompile view
to define a view of one or more tables or views

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Introduction to Database System
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?

ID-dependent entity
ID- independent entity
Strong entity
Weak entity

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Introduction to Database System
Which of the following is not a logical data-base structure?

relational
chain
tree
network

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Introduction to Database System
When you have finished entering information into a form

the contents of the form can be printed
the template is written to the data file
the contents of the form are written to the data file
All of the listed here

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Introduction to Database System
A form defines

the width of each field
where data is placed on the screen
none of the listed here
both of the listed here

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