Figure 1.

OLS Architecture. Loaders will connect to a CVS server to retrieve the latest versions of the ontology source files, transform the data into objects of the data model. The query layer is responsible for creating searchable text indexes as well as communicating with the database via the ORM layer. Programmatic access to the query layer is done via a SOAP interface. Interactive access is done via a Struts web application.

Côté et al. BMC Bioinformatics 2006 7:97   doi:10.1186/1471-2105-7-97
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