Chose the correct sentence in context of RDBMS.

Solution (By Examveda Team)

In the context of RDBMS (Relational Database Management System), the term "relation" refers to a table in a database.

Option A: A relation is an ordered list of tuples - This is the correct description. A relation in RDBMS refers to a table, and the rows of a table are called tuples. The term "ordered" here refers to the fact that while the rows in a table can be ordered, the relational model itself does not require any specific order for tuples.

Option B: Mapping between two tables - This is incorrect. In RDBMS, a relation refers to a single table, not a mapping between two tables. A mapping between two tables would be better described as a relationship or a foreign key constraint.

Option C: Set of identical values - This is incorrect. A relation is a set of tuples (rows), and each tuple can have different values. The term "set" here refers to a collection where each row is unique, not identical.

Option D: None of these - This is incorrect because Option A provides the correct definition.

Therefore, the correct answer is: Option A: A relation is ordered list of tuples