Database design/schema related work.

Read Project description before bidding. I'm looking for an experienced database developer who can work on build database schema and later on query building. What am I expecting? I need a scalable database which can perform complex query efficiently. What kind of database I need? I am looking for 1) Point of Sale system for Managing inventory. 2) Customer Management - Data of the Customer 3) Purchase and Sales record efficiently 4) Product with different attributes. For example Shirt can have different brand, style (Regular, Fit), Colors etc. 5) Barcode & RFID information for the product 6) Accounting (Future Work) 7) E-Commerce site (Future Work) What kind of Query am I looking for? I can make intermediate level query to get result, but for the complex reporting I need complex query. For an example : Based on the sales data, report can be run like most popular product, most trending product, fast moving item etc. Another example : Tag based report i.e Number of Products based on Brand, Color etc means Reporting based on different product attributes. I can discuss if you have any doubts. Let's work together. Start bidding with "Scalable Database" to avoid spammers.