Database 1.0

The Crow's foot symbol with two parallel lines indicates ____ cardinality.

(1,1)

Some very specialized applications may require normalization beyond the ____

4NF

True or false: Normalization is a very important database design ingredient, and the highest level is always the most desirable.

False

The CUSTOMER primary key column has no null entries, and all entries are unique. This is an example of ____ integrity. (a Customer table's primary key is cus_code)

entity

True or false: entity subtypes do not inherit the relationships in which the supertype entity participates.

false

____ in two 1:M relationships to other entities, thus producing an association among the other entities that is not expressed in the model

fan trap

Any attribute that is part of a key is known as a ____.

key determiner

The most likely data type for a surrogate key is ____.

numeric

A relational table must not contain a ____

repeating group

A ___ is any key that uniquely identifies each row.

superkey