>> If a db models "john is a person, john is male AND male is a gender"
is male data or meta data? Can the same thing (ie male) be both data
and meta data? And john would not be data according to you since john
is a person. Is this what you meant? <<
John is a single entity in the set of persons. Persons have an
attribute of gender, which takes on the value male. The representation
of the value,say ISO codes (0,1,2,9), is drawn from a domain, which
have a data type and constraints. All of these "levels" are completely
different.
Received on Mon Feb 28 2005 - 19:24:41 CST
