Re: Left AS/400 and Returned

["Bill Meecham" <bmeecham@xxxxxxxxxxxxxxxxxxxx>]

That's not necessarily true since multi-format and join logical files can be 
created and created much easier when the database is normalized.  The reason 
shops don't normalize is more likely because it's difficult to master and there 
is little perceived benefit.  Borrowing from another thread, that's a large 
part of what case tools help with....normalization and 'virtualization' of 
fields.  
  ----- Original Message ----- 
  From: michael@xxxxxxxxxxxxxxxxxx 
  To: Midrange Systems Technical Discussion 
  Sent: Tuesday, May 03, 2005 2:25 PM
  Subject: RE: Left AS/400 and Returned


  The reason that most vendors and shops don't have normalized databases
  is because most vendors and shops don't use the data store on the
  iSeries as a database - it's used as a system of indexed files.
  Normalization in that scenario can hurt performance, because the
  program would need to chain to several files to gather the information
  needed to present to the user. There's no doubt that normalization is a
  good thing for a database (at least 3NF), but normalization for indexed
  files isn't as important or desired.