ID

Anime

aid = short for anime ID
Every anime in the DB has exactly 1(!) unique ID.

Creq

cid = short for creq ID
Every creq in the DB has exactly 1(!) unique ID, which makes it possible to track down every change done.

Episode

eid = short for episode ID
Every episode in the DB has exactly 1(!) unique ID.

File

fid = short for file ID
every file in the DB has exactly 1(!) unique ID.

Group

gid = short for group ID
Every group in the DB has exactly 1(!) unique ID.

Producer

prid = short for producer ID
Every producer (company) in the DB has exactly 1(!) unique ID.