I am maintaining news articles in an access database. I need to classify each news articles into certain classes or sub classes in a classification master. But I require to provide these classifications for infinite number of levels. For e.g. a particular news article may be classified in Agriculture-Development class. The same can be also clssified in Company-Urea-Statistics class. Thus, the number of classifications and sub classifications are going upto &#039;n&#039; number of levels.<BR><BR>How do I maintain the database structure in a single table. How do I generate a classification tree upto the last sub class from this?<BR><BR>Thanks & Regards<BR>Santosh