taxonomy_index is a tracking table for _published_ nodes only. It allows optimized queries to generate term index pages.
On Jan 22, 2011, at 11:13 PM, Ryan Chan <ryanchan...@gmail.com> wrote: > Hello, > > I have created some terms (vocab=test) in Taxonomy and linked them > with a content type CCK using "Term reference". > > I found they are linked up in the DB by the table "taxonomy_index" and > "field_data_field_test", why duplicated linkage (both table contains > some data)? > > Seem taxonomy_index is not needed and data inside not incorrect, right? > > Is it a bug? > > Thanks.