I am new to Weblogic and J2ee. I need to build a webservice that simply runs a query on the backend database (DB2 zOS) and returns the results. Being new to this I have a few questions.

1) What is the best way to build the webservice? 2) How do I connect to the database with weblogic. 3) Is there a way to cache the data returned so that the next request for the same data is pulled from cache?

If googled for this but there seems to be many way to handle this. I am looking for the best way that can handle a high volume of requests.

Any links to sample code would be helpful. - Thanks