Interface para Operações Espaciais em Banco de Dados Geográficos

This work presents a generic programming interface, or API (Application Programming Interface), for spatial operations in geographical database developed in the TerraLib environment a base library for construction of geographical applications with integrated architecture. This API provides operations on geographical data stored in relational DBMS (RDBMS) and object-relational DBMS (ORDBMS). In the case of a new generation of ORDBMS which has a spatial extent, like Oracle Spatial, the API explores at most its resources to treat geographical data, for example, spatial indexes, operators and functions to manipulate and query these data through the query language SQL. The supplied operations of this API can be grouped as: (1) operations over vector data, for example, topological and metrical relation query, generation of a new geometry through a distance around an specific geometry (buffer), and set operations (intersection, union and difference); and (2) operations over raster data, as zonal operation and clipping based in a mask.