Another note, in RM, one can perform various forms of normalization
(1NF, 2NF, 3NF, BCNF, 5NF) and C.J. Date admits that "there might be
6NF, 7NF and so on ad infinitum". In the Db for DunderHeads' data
model, there is nothing like "normalization" (or schemas) from the
user's point of view, as it represents data without redundancy which is
approximately equivalent to RM's infinith form of normalization. In RM,
after one creates a schema and populates it with data, I can specify
new things to represent that will cause a NULL to appear in the RMDB.
After one updates the schema and gets rid of the NULL, I can repeat the
process over and over, until one realizes that while it may be
theoretically possible, it is highly impractical.
Received on Thu Apr 20 2006 - 09:10:11 CDT
