The Integrated Gazetteer Database (IGDB) is a compilation of open-source placename information in the form of an SQL database.
Design for an Integrated Gazetteer Database: Technical Description and User Guide for A Gazetteer to Support Natural Language Processing Applications
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The Integrated Gazetteer Database (IGDB) is a compilation of open-source placename information in the form of an SQL database. It was designed as a full-globe meta-gazetteer supporting information system applications such as question-answering. This technical report documents the IGDB requirements and design. The schema and its intended usage are described in detail.