Data displayed by dynamic web sites is usually stored in some sort of backend database. Typically, a numeric ID is associated with each data row of a database table, and all database operations with the table are done by referencing that ID.
More often than not, the same ID used to identify an item in the database is also used in PHP scripts to refer to that particular item, such as a product in an e-commerce web site, an article of a blog, and so on. In a dynamic URL, these IDs are passed via the query string to a script that presents differing content accordingly.
This is probably the most common approach employed by dynamic web sites at present, because you frequently meet URLs such as the following:
This approach is certainly the easiest and most straightforward when developing a dynamic site. However, it is frequently sub-optimal from a search engine spider's point of view. It also doesn't provide relevant keywords or a call to action to a human viewing the URL.
Some programmers also tend to use extra parameters freely, as shown in second URL example. For example, if the parameter ref_id is used for some sort of tracking mechanism and search engine friend-liness is a priority, it should be removed. Lastly, any necessary duplicate content should be excluded from search engines view using robot.txt file or robots meta tag.
Post by : w3 Administrator
Post on : 04 September 2011
Title : Dynamic URLs of Dynamic Web Site
Category : SEO Guide
Source : http://www.leakbali.com
