adplus-dvertising
frame-decoration

Question

A foreign key is:

a.

a column containing the primary key of another table.

b.

used to define data types.

c.

used to define null status.

d.

all of the above are above correct.

Posted under DBMS

Answer: (a).a column containing the primary key of another table.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. A foreign key is:

Similar Questions

Discover Related MCQs

Q. Which of the following columns is(are) are required in a table?

Q. In a 1:1 relationship, the foreign key is placed in:

Q. Which of the following column properties would be used to specify that cells in a column must be immediately filled with a monetary value of $10,000?

Q. The identifier of an entity will become the ________ of the new table.

Q. Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?

Q. A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n):

Q. Which is not true about surrogate keys?

Q. For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?

Q. Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?

Q. Each entity is represented as a(n):

Q. For every relationship, how many possible sets of minimum cardinalities are there?

Q. If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value.

Q. Which of the following column properties would be used to specify that cells in a column must contain a monetary value that is less than another monetary value in the same row?

Q. The type of diagram in which the operations are specified on objects is considered as

Q. Considering the binary relationships, the possible cardinality ratios are

Q. The attributes that can be arranged into hierarchy are called

Q. The set of all the entities having same attributes is classified as

Q. The set of values which specifies which values are to be assigned to individual entities is considered as

Q. The type of attributes that can be divided into smaller parts is classified as

Q. The particular database and the set of related programs which helps in implementation of updates and queries is called