By Fançois Bancilhon; Peter Buneman (eds.)
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NET code. NET runtime process hosted by SQL Server known as SQLCLR. The managed code environment in which SQLCLR operates allows SQL Server to deal with certain types of complex data objects, such as spatial data, more efficiently than relying on T-SQL alone. ■ Note SQL Server uses SQLCLR to perform operations on system-defined CLR datatypes—geometry, geography, and hierarchyid—as well as for user-defined CLR datatypes (UDTs). When querying such data, SQLCLR works alongside the T-SQL engine; it does not replace it.
MultiPolygons are two-dimensional, simple, closed geometries. • The length of a MultiPolygon is defined as the sum of the lengths of all the rings in all the Polygons it contains. • The area of a MultiPolygon is the sum of the areas of all its Polygons. GeometryCollections The MultiPoint, MultiLineString, and MultiPolygon geometries considered previously are examples of geometry collections containing only a single type of geometry. It is also possible to define a generic, heterogeneous GeometryCollection, which may contain any number of any type of geometry (with the exception of the FullGlobe geometry, discussed later).
Polygons A Polygon is a type of surface; that is, a Polygon is a two-dimensional geometry that contains an area of space. The outer extent of the area of space contained within a Polygon is defined by a closed LineString, called the exterior ring. In contrast to a simple closed LineString geometry, which only defines those points lying on the ring itself, the Polygon defined by a ring contains all of the points that lie either on the line itself, or contained in the area within the exterior ring.
Advances in database programing languages by Fançois Bancilhon; Peter Buneman (eds.)