> > I am under the impression that you are assuming one already knows
> > which tables exist and which table to search for john and zip code.
>
> But there's always a schema, and you always have to know it.
> The format of the schema might change, but there is always a schema.
We agree that there is always a schema and ultimately the system, not
necessarily the user, needs to know it at run-time. With typical RDM
implementations, this is more difficult to accomplish in some
situations because in order to access data within a table, one
generally has to know the name of the table ahead of time. With
TDM/XDb1, while data is also classified/typed, an alternate method of
accessing the data is simply via the symbols that compose the data.
Once the data is accessed, TDM/XDb1 allows the related
class(es)/type(es), attributes, etc to be determined.
Received on Mon Mar 08 2004 - 12:39:12 CST
