Database design for bus reservation

Question

I\'m developing a reservation module for buses and I have trouble designing the right database structure for it.

Let\'s take following case:
Buses go from A to D w

Answer 1

From the perspective of bus company:

Usually one route is considered as series of sections, like A to B, B to C, C to D, etc. The fill is calculated on each of those sections separately. So if the bus leaves from A full, and people leave at C, then user can buy ticket at C.

We calculate it this way, that each route has ID, and each section belongs to this route ID. Then if user buys ticket for more than one section, then each section is marked. Then for the next passenger system checks if all sections along the way are available.