Thread: regarding storage in postgres

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 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! 
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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
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


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Hans-Jürgen Schönig <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