Re: understand basics - multiple cars in a database - selection of one
| От | avpro avpro |
|---|---|
| Тема | Re: understand basics - multiple cars in a database - selection of one |
| Дата | |
| Msg-id | CAAQdDn=MJw=ExxpfD2PDTVyL=9gAAa0cH1QZ5pUjcXDh7mDjDA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: understand basics - multiple cars in a database - selection of one (Luca Ferrari <fluca1978@infinito.it>) |
| Ответы |
Re: understand basics - multiple cars in a database - selection of
one
|
| Список | pgsql-novice |
hi all,
thanks for your feedback. I owe you some answers:
I'm beginner in programming both databases and applications. I'm using PostgreSql and Qt / C++ for my application and I'm trying to learn.thanks for your feedback. I owe you some answers:
On 5 February 2014 10:15, Luca Ferrari <fluca1978@infinito.it> wrote:
On Tue, Feb 4, 2014 at 10:34 PM, avpro avpro <avprowebeden@gmail.com> wrote:Oh yes, line feeds definitely made it a lot more understandable!
> let me write it differently:
> "when the application is lunched, I would like to select one car and then
> every property, option, transaction (applicable to this car) should be
> recorded by the application automatically. "
>
> the property, option, transaction should be recorded by the application
>
> hope this helps. thanks
I suppose what you need here is a good mapper for your application
(e.g., hibernate, but hey, you did not mention your application
language).
I suspect you are asking for a lazy master-child table lookup but hey,
you did not mention your tables.
This could help: http://qt-project.org/doc/qt-4.8/sql-masterdetail.html
but I recommend you getting either a better knowledge of your aim or a
good SQL/relational theory book.
Luca
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