relation(A structure composed of attributes (individual characteristics, such as name or address, corresponding to the columns in a table) and tuples (sets of attribute values describing particular entities, such as customers, corresponding to the rows in a table). Within a relation, tuples cannot be repeated; each must be unique. Further, tuples are unordered within a relation; interchanging two tuples does not change the relation. Finally, if relational theory is to be applicable, the domain of each attribute must be atomic- that is, a simple value, rather than a structure such as an array or a record. A relation in which the domains of all attributes are atomic is said to be normalized or in first normal form); relationship(An association established between common fields (columns) in two tables. A relationship can be one-to-one, many-to-many, or one-to-many)
contacts; truck; dealing(деловые); hookup(особ. между разнородными объектами); terms(a relationship between people • They are on bad/friendly terms); dealings(dealings plural business activities; the relations that you have with sb in business • Have you had any previous dealings with this company? • I knew nothing of his business dealings. • She has always been very polite in her dealings with me. OALD Alexander Demidov); a relationship with between, to, someone(с кем-либо); couplehood(романтических партнёров Баян); relationship; relations(мн. ч.; contact and communications between people, countries etc. • to establish friendly relations); confidential relations; arrangements(Alexander Demidov); fellowship; traffic
relations(База данных в ней представлена в виде набора отношений (relation), которые в свою очередь можно представлять себе как таблицу с заголовком, столбцами и строками.bartov-e)
