The components and tools that combine to form SICAD-GAA (the GIS Application Architecture) form the basis on which SICAD-UT applications can be created. Applications developed with SICAD-GAA generally consist of a geo-client for the graphical functions and an alpha client for the alphanumeric functions. The use of a uniform basic structure enables the same components to be used in all applications and therefore significantly reduces the cost and effort involved in development.
The breakdown into a geo-client and an alpha client enables an optimized and tailor-made set of tools to be deployed in each case. SICAD-GAA uses the SICAD procedure language to support the development of geo-clients; it uses the C programming language and the TCL/TK script language (Tool Command Language/Toolkit) for alpha clients.
The GAA components are split in:
