Features of Spatial Databases


Features of Spatial Databases

Features of Spatial Databases 

1) Spatial Measurements: Finds the distance between points, polygon area, etc. 

2) Spatial Functions: Modify existing features to create new ones, for example by providing a buffer around them, intersecting features, etc. 

3) Spatial- Predicates: Allows true/false queries such as 'is there a residence located within a mile of the area we are planning to build the landfill?

4) Constructor Functions: Creates new features with an SQL query specifying the vertices (points of nodes) which can make up lines. If the first and last vertex of a line is identical the feature can also be of the type polygon (a closed line). 

5) Observer Functions: Queries that return specific information about a feature such as the location of the centre of a circle