Why using username instead of user id?

[Alan DeKok]

Fajar A. Nugraha wrote:
> From db point of view only, normalizing is a "better" approach.
> Real-life implementation might have other priorities so normalizing is
> not always the best choice.

  What would be better would be to have a "live" table of online users,
and a "historical" table of old user activity.  The "live" table would
be small, so updates would be fast.  The "historical" table would only
get appended to, so it could hold a lot of data.

  Maybe for 3.0.

  Alan DeKok.