License

jTDS is Free Software. jTDS is made available under the terms of the GNU 
Lesser General Public License. 
The LGPL is sufficiently flexible to allow the use of jTDS in both open 
source and commercial projects. Using jTDS is considered to be dynamic 
linking; hence our interpretation of the LGPL is that the use of the 
unmodified jTDS source or binary does not affect the license of your 
application code.

If you modify jTDS and redistribute your modifications, the LGPL applies, 
basically meaning that you'll have to make the modified version publicly 
available under the LGPL license too. This ensures that all users of the 
software have access to all future improvements.

jTDS was initially based on software released under a BSD license by 
CDS Networks, Inc. and/or Craig Spannring, the author of the original 
FreeTDS JDBC driver from which jTDS is derived. Between releases 0.8.1 
and 0.9 jTDS was completely rewritten so the original BSD license no 
longer applies.