..............defines the structure of a relation which consists of a fixed set of attribute-domain pairs.

To select all column from the table the syntax is:

• [A] select all from table_name
• [B] select * from table_name
• [C] select from table_name
• [D] none

The number of attributes in relation is called as its .....................

• [A] Cardinality
• [B] Degree
• [C] Tuple
• [D] Row

A constructor operation does which of the following?

• [A] Creates a new instance of a class
• [B] Updates an existing instance of a class
• [C] Deletes and existing instance of a class
• [D] All of the above.

what is the work of using joint operation in database??

The process of reading a database schema and producing a data model from that schema is known as:

• [A] data modeling.
• [B] database design.
• [C] reverse engineering.
• [D] None of the above is correct.