info on database schema

[Gloria Chung]

Hi,
I'm wondering if there's any documentation on the free-radius database schema. I'm especially interested in the user-group (which table contains the roles and how is that associated with an individual user).
From the database that I built from the file src/modules/rlm_sql/drivers/rlm_sql_oracle/db_oracle.sql, it doesn't look like there are any relationship between the user (radcheck table) and the user groups (assuming usergroup table).
Have I missed a step in building the database?
Any help will be appreciated. Thanks in advance.

Gloria


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