BA Continuum Interview Questions, Process, and Tips

An interface is a point of interaction between two systems or components.

• An interface defines the methods, properties, and events that a component exposes to other components.

• Interfaces allow for loose coupling between components, making it easier to change or replace one component without affecting others.

• Examples of interfaces include user interfaces, application programming interfaces (APIs), and network interfaces.

SQL query to find employee and their managers from the same table.

• Use a self-join to join the table with itself.

• Match the employee's manager ID with the manager's employee ID.

• Select the employee and manager details from the table.