Abstract—This paper describes a system to enable access to
those information systems at the National Autonomous University
of Mexico that are related to biodiversity and the environment.
This system associates existing Geographic Information Systems,
Biodiversity Information Systems, and standard Relational
Database Management Systems in a federation. In this way, the
system enables researchers to retrieve information using a single
query interface, in a format suitable for their particular field of
study, and according to a corresponding set of permissions. The
main contribution of this paper is to propose an open-sourced
Mediator system compliant with open international standards.
This system offers a competitive performance against state of
the art Relational Database Management Systems in spatial and
non-spatial join operations.
Index Terms—mediator system, geospatial information system,
biodiversity information system, information system federation,
query system