I need to develop a application within a DNN page where, for various reasons (mostly layout), it needs to be broken into multiple custom modules (4-6) all residing on the same page.

There is a lot of basic data that is common between these different modules that is driven by a common query string parameter (productid). 

Is there a method where I can retrieve the data from SQL just once and in one module (a master module of sorts) and share this common data (inherit it) amongst the other modules on the same page or must I have to write all the logic into each and every module to parse the Id from the query string and retrieve the data?  

The ability to share common data between the the modules would reduce processing and coding  overhead significantly.

Any suggestions most welcome.

Les.