Abstract: Systems and methods for populating a database. An ontology is parsed to determine a plurality of keywords. A string-based search engine is utilized to perform a search of documents on a network based on the determined keywords, and at least one document is retrieved. A relation is established between the retrieved document and the ontology, and it is determined if the at least one document is to be stored in the database based on the established relation. If so, the document is stored in the database. The database can be used as part of a standalone or plug-in search engine for retrieving online documents.