Mathematical relation
HomePage
|
Recent Changes
|
Preferences
Difference (from prior minor revision)
(no other diffs)
Removed: 2d1
Added: 3a3,4
The notion of mathematical relation is fundamental in the
relational model
for
database
s.
A
mathematical relation
over the
set
s
X
1
, ...,
X
n
is any
subset
of
X
1
× ... ×
X
n
, that is, the
Cartesian product
of these sets. An important type of mathematical relation is the
binary relation
.
The notion of mathematical relation is fundamental in the
relational model
for
database
s.