The Declarative Framework Approach to Decision Support for Constrained Search Problems - Efficient Decision Support Systems: Practice and Challenges from Current to Future - page 171

Fig. 4. The part of ERD (simplified Martin's notation) diagram for questions parameters
tables.

Table name
description

Column
name

Symbol Key Column description

j kd_idmia pk ID delivery point

tra_miast
delivery points

naz id_nazwa The name of the point

z id_zapot The demand for pallets

i kd_idtra pk ID route

tra_trasy Routes

naz id_nazwa The name of the route

tra_dosta
delivery points along
the route

j kd_idmia pk(fk) ID delivery point

i kd_idtra pk(fk) ID route

l kd_idsam pk ID type of truck

The capacity of truck type (in
pallets)

tra_samoch
truck types

k id_poj_k

u id_kur_u Feasible number of curses

w id_cza_w Feasible duration of the courses

tra_sa_tr
allocation of trucks to
the routes

i kd_idtra pk(fk) ID route

l kd_idsam pk(fk) ID type of truck

c id_kos_c The cost of route by the truck type