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Introduction to Database System

Introduction to Database System
Microsoft Access is an enterprise-class database product.

True
False

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Introduction to Database System
In SQL, which command is used to create a database user?

CREATE USER
ADD USER TO DATABASE
MK USER
All of the listed here

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Introduction to Database System
A data dictionary doesn't provide information about:

It will be the dominant data base of the future
where data is located
the size of the disk storage device
It is conceptually simple
It allows a many-to-many relationship

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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- independent entity
ID-dependent entity
Weak entity
Strong entity

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

network
chain
tree
relational

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Introduction to Database System
A functional dependency is always an equation.

False
True

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