Best Practices for Working with Data

Our banking application is continuing to evolve. Today you want to mature the data tier almost to the point where it should be in the final product. The data tier will be responsible for managing all the connections to the database and making all the calls to the database. Likewise, you will continue to work with the business logic tier in being able to interact properly with the data tier.

The business logic tier will send requests for data and send data to be updated, going through the data tier. Keep in mind that you want to be sure to keep the data tier and the business logic tier separate. Why do we want to do this? If we ever decide to move the data to a different type of data store, we can do this ...

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