I didn´t understood your question, you want the taglib to connect and
render the data fetched direct from de database? If yes is the answer,
you can´t direct do that, you have to retrieve it from the server
(EJB, or any enterprise or data access component) or anothet tag that
retrieves data from the database and exposes this data, the data
retrieved must be put in a collection or object, than you have to make
this data accessible in an EL variable (you can put this var in any of
the Servlet scopes, and it will be accessible via EL).