regarding storage in postgres

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

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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 the corresponding 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

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=?ISO-8859-1?Q?Hans-J=FCrgen_Sch=F6nig?= <postgres@cybertec.at> writes:

Nithin Sontineni wrote:

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 .

You can find the code in src/backend/storage.

Also, read the docs first:
http://developer.postgresql.org/docs/postgres/storage.html
That's pretty high-level but I think you need the context before
you start reading code ...

regards, tom lane