
related topics 
{math, number, function} 
{theory, work, human} 
{government, party, election} 
{system, computer, user} 
{company, market, business} 
{rate, high, increase} 
{mi², represent, 1st} 

The relational model for database management is a database model based on firstorder predicate logic, first formulated and proposed in 1969 by E.F. Codd.^{[1]}^{[2]}^{[3]}
Contents
Overview
Its central idea was to describe a database as a collection of predicates over a finite set of predicate variables, describing constraints on the possible values and combinations of values. The content of the database at any given time is a finite (logical) model of the database, i.e. a set of relations, one per predicate variable, such that all predicates are satisfied. A request for information from the database (a database query) is also a predicate.
Full article ▸


related documents 
Combinatory logic 
Prolog 
System of linear equations 
Linear programming 
Big O notation 
Laplace transform 
Spinor 
Quadratic reciprocity 
Fibonacci number 
Redblack tree 
Banach–Tarski paradox 
Formal power series 
Trigonometric functions 
Lebesgue integration 
Wikipedia:Free Online Dictionary of Computing/R  S 
Field (mathematics) 
Lambda calculus 
Padic number 
Determinant 
Bernoulli number 
Linked list 
Binary search algorithm 
Computer numbering formats 
Travelling salesman problem 
Binomial coefficient 
Discrete cosine transform 
Grothendieck topology 
Distribution (mathematics) 
Mandelbrot set 
Pythagorean triple 
