Practice Database Design Using Normalization Multiple Choice Questions Quiz-2 - MCQGeeks.com

Q.1

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

first step.
second step.
third step.
fourth step.

Q.2

When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

first step.
second step.
third step.
fourth step.

Q.3

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

always
commonly
seldom
never

Q.4

When building a database from an existing set of tables, we still need to consider normalization principles.

True
False

Q.5

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

True
False

Q.6

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

True
False

Q.7

When assessing the table structure of an acquired set of tables with data, determining primary keys is (part of) the:

first step.
second step.
third step.
fourth step.

Q.8

Normalization ________ data duplication.

eliminates
reduces
increases
maximizes

Q.9

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

Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
Three rows have the values Brown, NULL, and Blue in the same column.
One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Q.10

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

Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
Three rows have the values Brown, NULL, and Blue in the same column.
One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Q.11

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

first step.
second step.
third step.
fourth step.

Q.12

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

Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
Three rows have the values Brown, NULL, and Blue in the same column.
One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Q.13

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

read-only
updateable
either a read-only or an updateable
None of the above is correct

Q.14

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

1NF.
2NF.
3NF.
BCNF.

Q.15

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

1NF.
2NF.
3NF.
BCNF.

Q.16

The design guidelines and priorities for read-only databases are different because read-only databases are never updated.

True
False

Q.17

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.

True
False

Q.18

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.

True
False

Q.19

The phrase "SALE.CNumber must exist in CUSTOMER.CNumber" is a referential integrity constraint.

True
False

Q.20

In all cases, normalization into BCNF is desirable.

True
False

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