Nithin Sontineni wrote:
> Hi,
> i want to know how postgres will store a
> relation in pages and where can i see the code related
> to this in the source code.Plz help me .
>
> S.Nithin
>
>
>
>
> __________________________________
> Discover Yahoo!
> Use Yahoo! to plan a weekend, have fun online and more. Check it out!
> http://discover.yahoo.com/
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
Nithin,
You can find the code in src/backend/storage.
There you will find a couple of directories containing code of various
parts of the storage system.
I guess you will be most interested in page/bufpage.c. There you can see how a page works. I highly suggest to read
thecorresponding header file
[hs@athlon storage]$ pwd
/usr/src/pg/postgresql-8.0.2/src/include/storage
[hs@athlon storage]$ ls -l bufpage.h
-rw-r--r-- 1 hs hs 10255 Dec 31 23:03 bufpage.h
There you can find information about the layout of pages.
best regards,
hans
--
Cybertec Geschwinde u Schoenig
Schoengrabern 134, A-2020 Hollabrunn, Austria
Tel: +43/664/393 39 74
www.cybertec.at, www.postgresql.at