Write some Software

Hi, We need a database system developed on Ms Access that can do the following: 1.) Setup product product codes in sequential numerical order. Each product will have attributes that vary. Ie: Product Name, Colour, Size, Location, Manufacturer. This will be the main database. For the manufacturer we want to be able to enter their details into a card or something similar and just be able to select from a list or type the first letter and it drops down with suggestions. 2.) Requires an area for storage of customers data and the products they have purchased from the above products database called approved products. Ideally we want to be able to enter the product code and have it automatically populate the attributes from the main database. And if something changes we want it to be automaticall reflected on the customers card. This is essentially a list of the products the customer buys from us and the product data. 3.) Requires an area for storage of customers data and the products they have been sampled. Again we just want to enter a code and have it auto populated. It's nearly identical to the above but this time it's only storing product sample data for items that have been given to the customer to test. 4.) All of the above need to be in their own sections, ie: approved product, database, samples etc. 5.) Database needs to be able to search by certain attributes and it lists all the products matching for each section above. So for example if I want to search for something in samples only I want only products listed in that category not the others. 6.) Many products will be the same name but different attributes and different product codes. We need this capability. 7.) Must be able to store hundreds of thousands of lines of information. 8.) Needs to have password and username access 9.) Need to be able to upload existing database that is in excel format into the new database you design. Please send past work examples please