Re: Mapping one to many
| От | Richard Broersma Jr |
|---|---|
| Тема | Re: Mapping one to many |
| Дата | |
| Msg-id | 505272.7032.qm@web31815.mail.mud.yahoo.com обсуждение |
| Ответ на | Re: Mapping one to many (Nabil <Nabil@kramer-smilko.com>) |
| Список | pgsql-novice |
--- Nabil <Nabil@kramer-smilko.com> wrote: > Also there are better forms, other than row/column, in > which to module data but there any Databases that support them. I am not sure what you have in mind when you say that there are forms that are better than row/colum. Really a table can be thought of as a container that holds specific entities(rows) each entity is defined by its attributes(colums). However, I would argue that idea of "row/column" is closer to a spreadsheet rather than a table. Tables are distinctly different from a spreadsheet. > If > you'll notice from my second message I was asking why that is so is > so and to please enlighten me to the magic of RMDBs. I feel as if > there is something about RMDBs that will explain alot but is just > beyond my reach and I what to know what it is. http://en.wikipedia.org/wiki/Entity-relationship_model http://en.wikipedia.org/wiki/Database_normalization I hope this helps. Regards, Richard Broersma Jr.
В списке pgsql-novice по дате отправления: