Abstract: An E-commerce system logic of defining product specifications with or without option variable questions by means of a XSD file. The XSD file (or other Document Type Definitions (DTD) files) defines: type of data input, more information links, format ability, edit rules on the answer, and error message words if input errors occur. The option selections will have user definable interrelationship with cross checking between options. Each option element has the ability to invoke a specified “More Information” link with answers integrated back to the questions. Real time Scalable Vector Graphic (SVG) layout can be achieved in the More Information screen. The XSL file is used to define various components such as: math to compute the selling price, shipping cost, sales tax & other fields. The resultant option answers with or without SVG is retained in XML format in a single table within the database. The final checkout order will not occur until the update cart has been successfully completed without any errors.