[Couchdb Wiki] Update of "EntityRelationship" by AlexanderKosenkov

[Apache Wiki <wi...@apache.org>]

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Couchdb Wiki" for change notification.

The following page has been changed by AlexanderKosenkov:
http://wiki.apache.org/couchdb/EntityRelationship

------------------------------------------------------------------------------
    "phones":[{"number":"(650) 555 - 2200","type":"home"},{"number":"(650) 555 - 2201","type":"mobile"}],
  }
  }}}
+ 
+ or even
+ 
+ {{{
+ {
+   "_id":"Scott",
+   "type":"contact",
+   "name":"My Friend Scott",
+   "phones":[{"home":"(650) 555 - 2200"},{"mobile":"(650) 555 - 2201"}],
+ }
+ }}}
+ 
  Note how only the fields that we know are stored. Also note that the phone numbers are not simply an array, they are an array of associative hashes. We could extend this with no effort to add email addresses, IM names etc, even if IM names would need an extra attribute that has the service type. In essence, you're embedding child documents in the master document. That is the power of schema-less databases.
  
  == Many to Many ==