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Foundations of Deductive Databases and Logic Programming
book

Foundations of Deductive Databases and Logic Programming

by Jack Minker
May 2014
Intermediate to advanced content levelIntermediate to advanced
752 pages
35h 3m
English
Morgan Kaufmann
Content preview from Foundations of Deductive Databases and Logic Programming
700 van
Emden
and
Szeredi
The control mechanisms
of
logic programming belong
to two
main
categories. Goal selection determines
the
derivation tree when
the
query
and
the program
are
given.
To
find
a
successful derivation within this tree
is the
problem
of
OR-control.
To
select goals
in
such
a way
that
the
derivation tree
as
a
whole
is
favorable
is the
problem
of
AND-control.
Prolog's AND-control
is
characterized
by the
fixed goal ordering where
the
leftmost goal
is
always selected. Thus, when
the
goals
are Gj,G
2
,...,G
w
,
none
of
G
2
,...,G
n
will
get any
attention until
G
x
is
completely solved. This
is not ef-
fective
for an
important class
of
logi ...
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Publisher Resources

ISBN: 9781483221120