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Creating ERD Dıagram

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The courses are scheduled one year in advance and then marketed in trade magazines and on the internet. Bookings are received either by phone or over the internet. Bookings are taken from individuals or from companies who may choose to take advantage of a discount available for multiple bookings. A multiple booking will be for more than two places and a discount of 20% is available. The number of places on a course is limited based on the size of the room where it will be delivered. Applicants will pay 10% of the course fee to reserve a place and will be invoiced for the remainder of the fee two weeks before the start of the course. An applicant may cancel and request a refund up to one week in advance of the course but they will lose their deposit.
The institute has 6 rooms of varying sizes available for delivery of on-site courses. All the rooms are equipped with state-of-the-art technology.
On completing the course applicants may opt to do the certification test. This must be paid in advance. An applicant can apply to take the certification anytime within one year of having taken the course. The tutors mark the test and a certificate is sent to the successful applicants.
A company can also arrange to have a course delivered on-site. There is a one off payment for this regardless of the number of employees who attend. These courses can be arranged at reasonably short notice. This must be agreed with the tutor who will deliver the course. However, the company must pay in advance and there is no cancellation permitted for this form of delivery. The fee for delivering on-site is negotiated with the tutor in advance and can vary for each delivery.
The short course institute uses 15 tutors to deliver courses. These are paid on a consultancy basis for the actual courses delivered. When they complete a course they will invoice the institute.
The institute has requested an information system in order to manage the processing of the various types of booking, cancellations, assessments and the payment of tutors. They are aiming to use this specification to outsource the development of the system to a software house in India.


This is my assignment Is there anyone can help me to how can i show booking and which entities ı should relate it. Also constraints how can i show Please help me i dont want you to do my assignment just give ideas. What is the best source ıs there any example done before ıt is the best way for me to.

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