Hi there, and thanks first of all for hitting the link
i am a beginner in the database world, and found my self required to draw a conceptual model and an Entity Relational Diagram for a Leave Of Absence system. where the system has the following schema:
1-employee request LOA from his manager,
2- loa must approved (accept or reject)first by the manager where the emp is belong to.
3- HR officer approve the approved (accept or reject) loa request after checking if emp has enough day balance.
any help will be very appreciated !
Nader