Database schema system management (1 résultats)

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Please note that the content of this book primarily consists of articlesavailable from Wikipedia or other free sources online. The schema(pronounced skee-ma) of a database system is its structure described ina formal language supported by the database management system (DBMS).Database schema refers to the organization of data, to create ablueprint, of how a database will be constructed(divided into databasetables). The formal definition of database schema is a set of formulas(sentences) that specify integrity constraints imposed on the database.All constraints are expressible in the same language. A database can beseen in terms of logic as a structure in a realization of the databaselanguage.…