search and compare database in the website

A website that have the option to compare database components sides by sides, have an advanced search which let the user to select the options, and the website search for all the database for the data that match the criteria given the user to review and rate the products inside the data base, all the data base adding/editing categories are flexible. the main page have a place for adding news for the products. and links explaning some of the products, these also has to be flexible, to add a new ones. newsletter list.