Back history:
For the most part Item info was collected by players running either packetollector (EQEmu) or eqcollector (EthernalQuest) this came to about 10000 items, some were old data that had since changed. Some had corupted dat in em... In other words better tha nothing, but far from complete or perfect. Just prior to PoP being released EthernalQuest got a complete database of items from somewhere. This was about 27000 items, but didn't include PoP items. That is the data that the DB Addon items were made from. Now we are back to collecting items to fill in the missing PoP stuff. I'm sure EthernalQuest has a lot of updated stuff, but they havn't released a new DB for over 2 months
Bottom line pre PoP items all seem to be complete and accurate for pre PoP, and those came from the EthernalQuest DB post PoP items and updates to items since PoP was released are all via the packetcollector and eqcollector programs being run by EQ players and sending in the data.