'Business Logic '
Business Logic is a fundamental concept of programming that is used for manage the communication between the user interface (front end) and a database (backend). The main purpose of including business logic in our project to manage the workflow and structure of the project. Generally, business logic describes the sequential operation that performs in a database. And business rule describes the different operation or procedure like a number of tasks, project workflow, procedural steps, I/O operation and tools that are needed to manage the workflow of the project.