WDB files

WDB files (Warcraft DataBase files, or .wdb) are files created by World of Warcraft to cache data retrieved from its game servers.
WDB files regroup data downloaded in chunks. The data inside is ordered from first to last downloaded.
== Header ==
The header is of 16 bytes for pre-1.6 files, and 20 bytes for post-BC files:
*Signature : 4-bytes char signature
*Build: 4 bytes int identifying the build
*Locale: 4 bytes char identifying the locale, inversed (ie: SUne)
*Unknown: Unknown 4 bytes int, added in 1.6
*Unknown: Unknown 4 bytes int, added in 1.6
*Unknown: Unknown 4 bytes, added in 3.0.8.9464, always null
=== Signatures ===
Signatures, just like locales, are reversed in the header.
Signature	File 	Stands for
BDIW 	Itemcache.wdb 	Warcraft Item Database
BDNW 	Itemnamecache.wdb 	Warcraft Item Name Database
BOGW 	Gameobjectcache.wdb	Warcraft Game Object Database
BOMW 	Creaturecache.wdb 	Warcraft MOB Database
CPNW 	Npccache.wdb 	Warcraft NPC Database
NDRW 	Wowcache.wdb 	Warden Cache
TSQW 	Questcache.wdb 	Warcraft Quest Database
XTIW 	Itemtextcache.wdb 	Warcraft Item Text Database
XTPW 	Pagetextcache.wdb 	Warcraft Page Text Database
== EntryLength ==
The EntryLength is the length in bytes of the cached row. It is always found in the second column and helps the game determinate corrupted cache entries as well as optimizing the reading process. Rows with an incorrect EntryLength are cleared on log in.
== EOF ==
All WDB files end with 8 times \x00.