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Annexes
schema model
representation model for storing schemas (IS050 2002)
EXAMPLE
Representation model for a schema repository
semi-major axis (a)
longest radius of an ellipsoid (IS043 2003)
NOTE
For an ellipsoid representing the Earth, it is the radius ofthe equator.
semi-minor axis (b)
shortest radius of an ellipsoid (IS043 2003)
NOTE
For an ellipsoid representing the Earth, it is the distance from the
centre ofthe ellipsoid to either pole.
sequence
finite, ordered collection of related items (objects or values) that may be repeated
(IS039 2003)
NOTE
Logically, a sequence is a set of pairs . LISP syntax,
which delimits sequences with parentheses and separates elements in the sequence
with commas, is used in this International Standard.
service
capability which a service provider entity makes available to a service user entity at
the interface between those entities (IS034 2002)
service interface
shared boundary between an automated system or human being and another automated system or human being (IS034 2002)
set
unordered collection of related items (objects or values) with no repetition (IS039
2003)
shell
simple surface which is a cycle (IS039 2003)
NOTE
Shells are used to describe boundary components of so lids in 3D
coordinate systems.
simple
property of a geometrie object that its interior is isotropie (all points have isomorphie
neighbourhoods), and hence everywhere locally isomorphie to an open subset of a
Euclidean coordinate space ofthe appropriate dimension (IS039 2003)
NOTE
This implies that no interior direct position is involved in a selfintersection of any kind.
simple feature