Webtrends Analytics 9 Adminstration Guide, November 2012
In addition to the protocol, the domain name, and a path or directory, a URL frequently includes several query parameters that define a dynamically created page request. URL parameters are typically separated by a space or ampersand (&).
The following diagram shows the structure of a URL.
Dynamically generated URLs are constructed from multiple query parameters based on the content visitors request as they click through the site. A query parameter consists of a name-value pair. For example, the URL http://www.clothingshopping.com/category.aspx?catId=211&colorId=3&sizeId=6 includes the URL parameters CatId, ColorId, and SizeId. These query parameters can occur in any order. Defining these query parameters in your URL Parameter Analysis definitions enables you to track how many visitors requested particular types and combinations of information. For example, you could define CatId, ColorId, and SizeId to report on the catalog items, colors, and sizes of clothing visitors requested.