billing system with multiple profile PHP MYSQL

Question

My latest project is to build a billing system with multiple profile like 100+ training institutes connected with this system for their online front base management purpose.

like..

*Counseling

*Admission

*Billing

etc..

now what i want to know whether to keep a single database for all the operations or its better to maintain individual database for individual organization/profile.

well i'm kind a lost here just need a kick start.

i am using MySQL as database and PHP as my server side scripting language.

Thanks in advance

Answer 1

If your institutes are totally isolated, so you never want to get data from a different institute or any kind of summation over all institutes and if you're not planning to automatically create a new institue, you can use one database for each.

But I don't see any advantage in this and suggest to just use one database and have a column institute_id in each table. Access control will of course be in your PHP code.