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Introduction to Database System

Introduction to Database System
A relation is in Boyce-Codd Normal Form (BCNF) if every determinant is a composite key.

False
True

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Introduction to Database System
In which of the following can many entity instances of one type be related to many entity instances of another type?

One-to-Many Relationship
One-to-One Relationship
Many-to-Many Relationship
Composite Relationship

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

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

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Introduction to Database System
Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that:

A →
A → (B,C).
(B,C) →
A →

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Introduction to Database System
A report generator is used to

update files
print files on paper
all of the listed here
data entry

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Introduction to Database System
In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

parent
child
subtype
instance

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