Which of the following is usually not part of a Spatial DBMS
A.
Spatial data types, e.g., points, line-strings, polygons.
B.
Spatial operations, e.g., distance, inside, neighbor.
C.
Spatial data-structures, e.g., R-tree
D.
Spatial algorithms, e.g., tree-matching
E.
Spatial visualization, e.g., fly through