hotel reservation system

[cpeng]

i am making the hotel reservation system database.cosidering the following
customer(name,phone,address,city,creditcard no,etc)
reservation(check in date, check out date, price, customer name, no of rooms)
room (room no,room type, price)'

but i am not satisfied with it.i have to keep record of hall and table reservation as well .
i want to differentiate b/w resident customer and non resident customer .
plz any one guide me to build the complete ERD for my database i will be very thankful

plz help me as i have just started database

[debasisdas]

Before drawing the ER you need to gather all informations and be sure of all your requirments.

[cpeng]

i have collected some information like
customer(cutomer_name,address,phone,company_name,company_phone,cutomer_type)

company information is added for corporate customer nad customer type will identify wether
the customer is resident or non resident.

this approach for cutomer is correct or else i have to use the supertype/subtype concept
basically i want to distinguish b/w resident or non resident and corporate customer and non corporate

plz guide me

[acidutzu]

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