Automated Test Framework for testing Data provided in two files

I would like to develop an automated test framework for testing/verifying the data model of a Desktop application using Java. Basically, the approach I would like go for is to retrieve the data in to an excel file and assert against the data provided from the business. I am running in to questions here on :

• What would be the ideal approach for a Test Framework for data model testing?
• Are there any test frameworks that can adapt to my situation?
• What are the things that need to be considered for a data model testing (fields, references and qualifiers.)

Any inputs is much appreciated. Thanks.