DATABASE DESIGN USING NORMALIZATION QUIZ

Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

Three rows have the values Brown, NULL, and Blue in the same column.

Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.

Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.

One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

TRUE ANSWER : ?
YOUR ANSWER : ?

Denormalized tables are in BCNF.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Multivalued dependencies should ________ be eliminated.

commonly

always

never

seldom

TRUE ANSWER : ?
YOUR ANSWER : ?

Proper normalization eliminates duplicated data.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Most of the time, modification anomalies are serious enough that tables should be normalized into:

2NF.

BCNF.

3NF.

1NF.

TRUE ANSWER : ?
YOUR ANSWER : ?

If a table has been normalized so that all determinants are candidate keys, then that table is in:

2NF.

3NF.

1NF.

BCNF.

TRUE ANSWER : ?
YOUR ANSWER : ?

Eliminating modification anomalies is a(n) ________ of normalization.

either an advantage or disadvantage

advantage

disadvantage

neither an advantage nor disadvantage

TRUE ANSWER : ?
YOUR ANSWER : ?

Normalization requires programmers to write more complex SQL.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

fourth step.

third step.

second step.

first step.

TRUE ANSWER : ?
YOUR ANSWER : ?

We have normalized a table into BCNF if all candidate keys are determinants.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

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