Performance improvement for xml loads (+comments)

[Patrick Spinler]

I wrote:
> 
> To a first approximation.  At least, all the databases appear to support
> the data types required by the SQL92 standard, and this standard
> includes all the types you'd expect (several sizes of integer & floating
> point variables, character strings, date fields, money fields, blobs,
> etc).
> 
> Of course, each database supports its own types beyond this, and they
> may even have their own name for the SQL required types and treat the
> SQL name as an alias.  Finally, the database files are binary
> incompatible, of course.
              ^
              +-- between different rdbm's


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  Patrick Spinler			email:	Spinler.Patrick@Mayo.EDU
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