1
Needing to using more complicated SQL in database applications is a(n) ________ of normalization.
A)
advantage
B)
disadvantage
C)
either an advantage or disadvantage
D)
neither an advantage nor disadvantage
Answer & Solution
Answer: Option
B
2
Eliminating modification anomalies is a(n) ________ of normalization.
A)
advantage
B)
disadvantage
C)
either an advantage or disadvantage
D)
neither an advantage nor disadvantage
Answer & Solution
Answer: Option
A
3
Multivalued dependencies should ________ be eliminated.
A)
always
B)
commonly
C)
seldom
D)
never
Answer & Solution
Answer: Option
A
4
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:
A)
first step.
B)
second step.
C)
third step.
D)
fourth step.
Answer & Solution
Answer: Option
C
5
Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems?
A)
The multivalue, multicolumn problem
B)
The inconsistent values problem
C)
The missing values problem
D)
The general-purpose remarks column problem
Answer & Solution
Answer: Option
B
6
When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:
A)
first step.
B)
second step.
C)
third step.
D)
fourth step.
Answer & Solution
Answer: Option
B
7
Creating a read-only database is a task that is ________ assigned to beginning database professionals.
A)
always
B)
commonly
C)
seldom
D)
never
Answer & Solution
Answer: Option
B
8
Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?
A)
Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
B)
Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
C)
Three rows have the values Brown, NULL, and Blue in the same column.
D)
One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.
Answer & Solution
Answer: Option
D
9
For a number of reasons, normalizations is not often an advantage for a(n) ________ database.
A)
read-only
B)
updateable
C)
either a read-only or an updateable
D)
None of the above is correct
Answer & Solution
Answer: Option
A
10
Most of the time, modification anomalies are serious enough that tables should be normalized into:
A)
1NF.
B)
2NF.
C)
3NF.
D)
BCNF.
Answer & Solution
Answer: Option
D
