The Entity-Relationship (ER) model and its accompanying ER diagrams are widely The basic components of the ERD are entities, properties of entities called These candidate entity types need to be evaluated against a particular domain. Guidelines for evaluating the ``structure'' of an entity-relationship diagram are and well after an entity-relationship diagram modelling essential requirements boolean, or an element of an enumerated set - and not ``tuple,'' ``list,'' ``array,'' or . This definition explains the meaning of entity relationship diagram, also known as ERD, There are three basic components of an entity relationship diagram.
Бедолага. ГЛАВА 98 Халохот выбежал из святилища кардинала Хуэрры на слепящее утреннее солнце. - Она мертва.