![Crypto Terms Glossary: What is Business Logic Layer (BLL)? Crypto Terms Glossary: What is Business Logic Layer (BLL)?](/img/180/210/what-is-business-logic-layer-bll-sm.webp)
Within a programming context, the business logic layer (BLL) determines how data a software program interacts with can be created, altered, and stored. The business logic layer coordinates data between the program's user interface (UI) and data access layer (DAL), although in some programs the UI interacts directly with the DAL.
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