Combine tables

Combine Area and Reader if Area has no reason for existence It can happen that a table has no reason to exist, after denormalisation.

An example: All elements from the table Area have been copied to reader.

Attention Check if the table is really redundant. Attention: The upper table, 'Area' can have a number of reasons to exist:
  1. an area can exist without readers (a one without manies). For example as input suport, to show a list of all area when adding a new reader.
  2. an area is required for validation or input support, for example a list of valid postcodes.
  3. the table is reuired for other functions.