Re: Logical relations between students/teachers/etc and groups, classes, and courses

["Ilya A. Volynets-Evenbakh" <ilya@total-knowledge.com>]

Alexey Parshin wrote:
> 2008/7/10 Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com 
> <mailto:ilya@total-knowledge.com>>:
>
>     Alexey Parshin wrote:
>     > Object relations:
>     >
>     >    1. The central unit of hierarchy is Class. Class has a title
>     and description.
>
>     >        (There is still a question about title/description in
>     preferred language, but that's a separate issue).
>     >        Class may be connected to any number of courses, and vise
>     versa (many to many r/ship).
>     >        Class may include several groups with different group
>     types (TEACHERS, STUDENTS, etc).
>     >        Class also defines subscription rule that defines ether
>     the class is free or has a price or a periodic payment.
>     >    2. A course is defined as a record with a compulsory
>     reference to TLT (Top Level Topic) version.
>
>     >        Therefore, a course defines a version snapshot of the UMO
>     hierarchy for the TLT.
>     That's not what the original design had. Course is an object
>     connected to TLT.
>
> Do you mean that course is a UMO?
No.