Re: Can we solve this -- NFNF and non-1NF at Loggerheads

You raise some very valid points. But let me ask a question. Suppose we want to interrogate the value taken from the set of values in a domain assigned to an attribute of an arbitrary tuple.

The value is a value in the context you discuss it is returned, be it a "a character, a set of characters or a set of sets of numbers, or a bag of ordered characters". Does the phrasing 'contains a single value' still hold true if we want to get a value, open it up, traverse across a set of attribute/sub-domain pairs and their associated values, continue traversing through nested levels to meet the specified but arbitrary criteria, and then retrieve a value (which is actually some component of a value), whose domains comprises the definition of a higher-order domain or a hierarchicaly ordered set of higher-order domains?.

I don't know the answer for sure, though it does have some philosophical bearing.

Regards,

Dan Received on Tue Feb 08 2005 - 13:40:52 CST