Database Applications Quiz

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Write the SQL SELECT statement to display the average rent of the properties.

Use the following PROPERTY table to answer the question:

PropertyID	Type	Rooms	Rent
306	Apt	3	550
308	House	6	1000
325	Apt	4	625
397	Apt	3	550
412	House	7	1250
441	Apt	2	475

Write the SQL SELECT statement to display the property type, rooms, and rent sorted by the Type.

Use the following PROPERTY table to answer the question:

PropertyID	Type	Rooms	Rent
306	Apt	3	550
308	House	6	1000
325	Apt	4	625
397	Apt	3	550
412	House	7	1250
441	Apt	2	475

Redundant data increases the risk of data anomalies when you perform which of the following actions:

The process of breaking a table into with more than one theme into two or more tables each with only one theme, thus eliminating redundancy, is called:

In a 1:N relationship, the entity on the “one” side of the relationship is referred to as the __ and the entity on the “many” side is referred to as the __.

[removed]		Parent…child
[removed]		Child...Parent
[removed]		Preceding…Succeeding
[removed]		Succeeding…Preceding

An entity that cannot exist in a database unless another type of entity also exists is called a:

[removed]		Dependent entity
[removed]		Strong entity
[removed]		Special entity
[removed]		Weak entity

An attribute of a supertype entity that indicates which of the subtypes is appropriate for a given instance is called a(n):

[removed]		Discriminator
[removed]		Determiner
[removed]		Instance option
[removed]		Association

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