Question

I am a new ASP.NET developer with a good knowledge in Database Design. I am developing an intranet web-based booking system for my company and now I am struggling in designing the following required two requirements and one optional requirement:

Required Requirements:

1. The Event may have more than one time slot.
2. The user must be able to register in one of these time slot only.

Optional Requirement:

1. The user must be listed under a waiting list if there is no
   available seats in the event.

My simple database design is:

Users Table: UserID, Name, Department
Admins Table: UserID
Event Table: ID, Title, Description, Start_Date, End_Date, Start_Time, End_Time, Location,NumberOfSeats, isActive
BookingDetails Table: BookingID, EventID, UserID

So what I should add to my database design to accommodate at least the required requirements?

Answer 1

1. An Event may have more than 1 time slot.

Event Time Slots Table: TimeSlotID, EventID, Date, StartTime, EndTime

BookingDetails Table: BookingID, EventID, UserID, TimeSlotID

1. The User must be able to register in only one time slot per Event.

Create Unique Index on BookingDetails (EventID, UserID)