DataBase Management

I am working for a real estate company which has presently database consisting of name/address/phone/designation/mobile number, but the entire data is on excel sheets..Likewise they have numerous excel sheets areawise which is very difficult to maintain. I need a software where in we can feed in all the data and create a single master [login to view URL] that tomm i need to call a customer i can pull all the info in one click and make notes there..which will also create customer history and I should be able to mark the customer hot/cold or Do not disturb customer..Somewhat like how SAP works for an Accounts receivables process.. The fields shld be userfriendly and the master file could be divided in various portfolios so that I can allocate one one portfolio to each member of my team...I need options where if iwant to find out all the customer's who are MDs, it shld be able to pull and so on and so forth... Can you help.. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform not sure