But for me, it's no good to have the designative player name and not do the business on the field.

A designative entity is at the many end of a one-to-many relationship between two independent entities.

Designative - entities that contain a designation.

For example, there is no reference to associative or designative entity types in Codd's 1990 book that defines RM/V2.

Hence a designative entity must contain at least one designation whereas an associative entity must contain at least two designations.

In the nominals, there are two numbers and about nine grammatical cases (absolutive, ergative, instrumental, locative, ablative, allative, orientative, two comitatives and a designative).

Classification of leaves can occur through many different designative schema, and the type of leaf is usually characteristic of a species, although some species produce more than one type of leaf.

For example, a writer may write many books, hence a one-to-many relationship between writer and book entities; the book is the designative entity because it contains a designation (or designative reference) to the writer - namely the primary key of the writer entity.