Location: formerly called table, this is the basic component of the inventory. Each location has an identifier and a name.
Area: formerly called room, this is where locations are situated. Each location belongs to one area. Each area has a name, an identifier, a position, width and height.
Capacity: is the maximum number of seats/persons/places/slots available in the location.
Coordinates: is an object describing the position of a location in an area.
Shape: is the physical representation of the location. As Today, available shapes are Rectangle or Round.
