Flashcards
Terminology
Cards in this deck (8)
- 1What is a relation?A relation is a table with columns and rows
- 2What is an attribute?An attribute is a named column of a relation
- 3What is a domain?A domain is a set of allowable values for one or more attributes
- 4What is a tuple?A tuple is a row in a relation
- 5What is a degree?A degree of a relation is the number of attributes it contains
- 6What is cardinality?The cardinality of a relation is the number of tuples it contains
- 7What is a relational database?A relational database is a collection of normalised relations with distinct relation names
- 8What is a superkey?An attrib
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- Database Systems (Relational model) Flashcards on Terminology, created by Robin Lee-Delisle on 19/07/2017.
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- Robin Lee-Delisle
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