Attributed is calculated or otherwise derived from another attribute, such as age from a birthdate

are those drawn from the atomic value domains

A relationship may also have attributes

between the instances of two entity types

among the instances of three entity types

between two instances of one entity type

A binary relationship set is of degree ..

A ternary relationship is a relationship type that involves many to many relationships between two tables

How many instances of one entity will or must be connected to a singleinstance from the other entities.

should be the norm in any relational database design and is found in all relational database
environments

A computer language for storing, manipulating and retrieving data stored in a relational

All relational database management systems use SQL as standard database language.

SQL

SELECT

INSERT

GRANT : DQL

CREATE : DDL

DROP :DML

TRUNCATE :DDL

UPDATE :