Question

By definition, each relational database table must contain exactly one candidate key.

Select one:

a. True

b. False

Values appearing in a key column must always be unique, regardless of the type of key.

Select one:

a. True

b. False

Which of the following statements about well-formed relations is FALSE?

Select one:

a. A relation is well-formed if it is in third normal form (3NF)

b. Every determinant in a well-formed relation is also a candidate key

c. Any table that meets all of the necessary criteria to be classified as a relation can be considered well-formed

d. Well-formed relations are generally not susceptible to modification anomalies

Each table in a relational database must be related to at least ________ other table(s).

Select one:

a. Zero

b. One

c. Two

d. Three

Data contained within a relational database are stored in two-dimensional ________.

Select one:

a. Folders

b. Lists

c. Catalogs

d. Tables

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Question 1:

Answer :b. False

Explanation :A table in the database can have more than one candidate key.

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Question 2:

Answer :b. False

Explanation :

• Primary key column and unique key column values should be unique for each record.
• But foreign key value can be duplicate.

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Question 3:

Answer :d. Well-formed relations are generally not susceptible to modification anomalies

Explanation :Well-formed relations are generally not susceptible to modification anomalies is false statement.

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Question 4:

Answer :b.One

Explanation :Each table in a relational database must be related to at least one other table(s).

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Question 5:

Answer :d.Tables

Explanation :Data contained within a relational database are stored in two-dimensional called as tables.

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NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.