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                             As I use the software, I find things which slow me down, and I make tweaks.   Those changes can normally be done without changing the database 
                                structure. Its merely providing a quicker way of getting at the data, or working with the data. 
  When no changes are required to the data fields, I make a a minor change to a program. You download it from the 
                                web site and it works for you.
  When a field needs extending, or when a new field is required, the database structure
                                 has to be modified. Thats a different matter!  
                                Database structure changes have to be done by means of an Upgrade.
    
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