Relation: 2D table
Attributes: Columns of a relation
Relation Schema: Name of relation along with its attributes
e.g. Movies(title, year, length , genre)
Database Schema: A set of schemas for relations of a database
Tuple: Rows of the relation leaving the header (attribute names). Contains one component of each attribute of each relation
e.g. (Gone With the Wind, 1939, 231, drama)
Domain: Type of an attribute
e.g. Movies(title:string, year:integer, length:integer, genre:string)