What is the GEO DAB
GEO DAB is a key component of the GEOSS Common Infrastructure (GCI), transparently connecting GEOSS User’s requests to the resources shared by the GEOSS Providers.
GEO DAB scope is to simplify cross and multi-disciplinary discovery, access, and use (or reuse) of disparate data and information.
GEO DAB is a brokering framework that interconnects hundreds of heterogeneous and autonomous supply systems (the enterprise systems constituting the GEO metasystem) by providing mediation, harmonization, transformation, and QoS capabilities.
How it works
The GEO DAB applies the broker pattern, which separates users of services (clients) from providers of services (servers) by inserting an intermediary, called a broker. When a client needs a service, it queries a broker via a service interface. The broker then forwards the client's service request to a server, which processes the request. The GEO DAB presently provides broker components for discovery, access, semantics-enabled search.
Step by Step
The GEO DAB intercats with external systems by means of softare modules called Profilers and Accessors.
The following high-level steps are executed upon uers' requests.