network diagram link to sql database

i have a network diagram for the stations in my city,it is drawn in excel,what i need is to make each cell that represent the station to get its data from more than one sql table. i want to design this network(if possible)in another way rather than using excel but at the same time i want to retrieve the data on this diagram from sql tables based on the date the user chooses. this data is enetered daily with its date so i need a dropdownlist of all the data entered to let the user choose from it and i need it to be printed as pdf file.