is it possible to get connected to a mysql express remote database throught this apps ?
if the db you are interested in connecting to has a JDBC driver, it will probably work.
here are the instructions:
http://docs.splunk.com/Documentation/DBX/1.0.6/DeployDBX/DefineanewDB
of particular interest: Note: At a minimum, Splunk DB Connect supports querying custom-defined database connections. For some custom database connections, features related to generation of queries may not work. Additionally, depending on the JDBC driver's implementation of database-metadata, the custom dbinfo search command may not work.
According to the app's readme :
http://splunk-base.splunk.com/apps/50803/splunk-db-connect
The Supported DBMS are
so your mysterious Mysql express is not listed, but MYSQL and MSSQL are.
do you mean SQL Server Express? or hmmm: http://download.cnet.com/dotConnect-for-MySQL-Express/3000-10254_4-10907786.html
There is no thing as "mysql express"...