Extending relational algebra to manipulate temporal data.

Nikos A. Lorentzos Roger G. Johnson

Published in: Inf. Syst. (1988)

Keyphrases

temporal data
relational algebra
expressive power
query language
temporal information
relational model
data model
temporal databases
normal form
spatial data
complex objects
first order logic
relational calculus
temporal patterns
relational operators
data streams
transitive closure
relational databases