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Introduction to Database System

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.

child
subtype
instance
parent

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Introduction to Database System
In SQL, which command is used to add a column/integrity constraint to a table

MODIFY TABLE
ALTER TABLE
ADD COLUMN
INSERT COLUMN

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Introduction to Database System
For some relations, changing the data can have undesirable consequences called:

modification anomalies.
normal forms.
referential integrity constraints.
transitive dependencies.

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Introduction to Database System
A relation has cells that hold multi-value entries.

False
True

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Introduction to Database System
When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n):

normal form.
insertion anomaly.
referential integrity constraint.
transitive dependency.

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Introduction to Database System
In SQL, which command is used to select only one copy of each set of duplicable rows

All of these
SELECT UNIQUE
SELECT DISTINCT
SELECT DIFFERENT
None of these

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