Relational Data Model Flashcards
1
Q
What is a domain?
A
A domain D is a set of atomic values. By atomic we mean that each value in the domain is indivisible as far as the relational model is concerned.
A domain is given a name, datatype and format.
2
Q
What is an Attribute
A
An attribute is the name of a characteristic.
3
Q
What is a tuple
A
A single row in a table representing an object is a tuple
4
Q
What does the first normal form say?
A
It says that composite and multivalued attributes are not allowed in a tuple.
