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Database Design Using Normalization Online Exam Quiz

Important questions about Database Design Using Normalization. Database Design Using Normalization MCQ questions with answers. Database Design Using Normalization exam questions and answers for students and interviews.

1. When assessing the table structure of an acquired set of tables with data, determining functional dependencies is (part of) the:

Options

A : first step.

B : second step.

C : third step.

D : fourth step.

2. Needing to assess the validity of assumed referential integrity constraints on foreign keys is a(n) ________ of normalization.

Options

A : advantage

B : disadvantage

C : either an advantage or disadvantage

D : neither an advantage nor disadvantage

3. Creating a read-only database is a task that is ________ assigned to beginning database professionals.

Options

A : always

B : commonly

C : seldom

D : never

4. Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem?

Options

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.

5. For a number of reasons, normalizations is not often an advantage for a(n) ________ database.

Options

A : read-only

B : updateable

C : either a read-only or an updateable

D : None of the above is correct.

6. Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems?

Options

A : The multivalue, multicolumn problem

B : The inconsistent values problem

C : The missing values problem

D : The general-purpose remarks column problem

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

Options

A : 1NF.

B : 2NF.

C : 3NF.

D : BCNF.

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

Options

A : 1NF.

B : 2NF.

C : 3NF.

D : BCNF.

9. When assessing the table structure of an acquired set of tables with data, counting the number of table rows is (part of) the:

Options

A : first step.

B : second step.

C : third step.

D : fourth step.

10. Each answer below shows example data from a table. Which answer is an example of the missing values problem?

Options

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.

1. In all cases, normalization into BCNF is desirable.

Options

A : True

B : False

C :

D :

2. Denormalized tables are in BCNF.

Options

A : True

B : False

C :

D :

3. Normalization requires programmers to write more complex SQL.

Options

A : True

B : False

C :

D :

4. When building a database from an existing set of tables, we may safely assume that referential integrity constraints have been enforced on the data we are given.

Options

A : True

B : False

C :

D :

5. One common design problem when designing a database from existing data is the use of a general-purpose remarks column in the received data.

Options

A : True

B : False

C :

D :

6. Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF.

Options

A : True

B : False

C :

D :

7. We use the SQL construct COUNT(*) to count the number of rows in a table.

Options

A : True

B : False

C :

D :

8. One common design problem when designing a database from existing data is the use of a single cell in one column to store multiple values of an attribute.

Options

A : True

B : False

C :

D :

9. One common design problem when designing a database from existing data is the presence of missing values, called blank values, in received data.

Options

A : True

B : False

C :

D :

10. We use the SQL construct COLUMNS(*) to determine the number and type of columns in a table.

Options

A : True

B : False

C :

D :

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