Emdros is a text database middleware-layer aimed at storage andretrieval of "text plus information about that text." Thisinformation could be linguistic analyses or other annotations. Emdrosprovides an abstraction of text that makes it well suited to storing/syntactic analyses/ of text, but other linguistic information issupported as well. Emdros comes with a query-language, MQL, thatenables powerful queries. Emdros acts as a middleware-layer between aclient (not provided) and a database back-end. Currently, PostgreSQL,MySQL, and SQLite (2 and 3) are supported, but other back-ends can easily be added.