MLSQL is an open source library that allows easy access to relational database systems from within the MarkLogic environment. The MLSQL Tutorial has more information: http://xqzone.marklogic.com/howto/tutorials/2006-04-mlsql.xqy Source Components ----------------- The "client" directory holds the sql.xqy library module. That's the only file needed from XQuery. The "server" directory holds the servlet with which the XQuery communicates. The Java code is straightforward: it accepts an XML request from the XQuery client, issues a JDBC request to the relational database, and returns an XML response to the XQuery client. The "zipcode-example" directory holds the SQL zipcode table data and example queries as described in the tutorial. Building -------- Just run "ant". It produces zip files under the "distribution" directory and a "buildtmp" support directory. Installation ------------ The tutorial above explains the basic steps of an install.