A business practitioner has been given a condition to create a link between two tables...

To create a link between two tables such that one primary key of the first table can be connected with multiple values over the primary key of the second table, the business practitioner needs to define the cardinality in the first table as 1:n.

The cardinality defines the relationship between the two tables. In this case, the first table has a primary key that can be connected with multiple values over the primary key of the second table. This is a one-to-many relationship, which is represented by the cardinality 1:n.