In SimpleOne business logic is implemented as a set of the following tools:
Business Rules
...
Business rules are server-side scripts running at the moment of inserting, updating, or deleting a record. Business rules are used for such tasks as conditionally automatic value change in the form fields or event creation for email notifications and script actions.
Client Scripts
...
Client scripts are used to execute JS scripts in the browser when the client-side events happen, for example: form loading, form submission or field value change. Client scripts allow configuring forms, form fields, and field values while the client uses the form.
Policies
...
Workflow
...
Workflow is a tool that allows configuring complex processes across the solution. The Workflow Editor displays processes visually as a set of boxes and arrows representing transitions, conditions, and stages. Set the sequence of steps and stages your business needs by using various types of activities: utilities, conditions, approvals, subflow, and timer.