SQL - Primary Key. A primary key is a field in a table which uniquely identifies each row/record in a database table. Primary keys must contain unique values. A primary key column cannot have NULL values. A table can have only one primary key, which may consist of single or multiple fields. When multiple fields are used as a primary key, they are called a composite key.
Noun. 1. marginalization-the social process of becoming or being made marginal (especially as a group within the larger society); the marginalization of the underclass; the marginalization of literature. marginalisation. social process-a process involved in the formation of groups of persons.
(sÉËbÉËbÉªÉ) n. 1. (Human Geography) suburbs or the people living in them considered as an identifiable community or class in society. 2. (Sociology) suburbs or the people living in them considered as an identifiable community or class in society. 3. (Sociology) the life, customs, etc, of suburbanites.