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Re: I am confused after reading codes of PostgreSQL three week

From: Vaibhav Kaushal <vaibhavkaushal123(at)gmail(dot)com>
To: Brendan Jurd <direvus(at)gmail(dot)com>
Cc: hom <obsidianhom(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: I am confused after reading codes of PostgreSQL three week
Date: 2011-03-18 10:33:21
Message-ID: AANLkTikbOqEQY2JOrfOns_0dQRTMEKWv_4rc1-d=kJjE@mail.gmail.com (view raw or flat)
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Hi,

That was the question I was facing 5 months ago and trust me I am doing it
even now. With an average of 6+ hours going into PostgreSQL Code, even with
best practices (as suggested by the developers) I still think I know less
than 10 percent. It is too huge to be swallowed at once.

I too had to break it down into pieces and because everything is so
interconnected with everything else, it is quite complicated in the
beginning. Start with one piece; planner, parser, executor, storage
management whatever and slowly it should help you get the bigger picture.

regards,
Vaibhav

I had to break it into

On Fri, Mar 18, 2011 at 3:39 PM, Brendan Jurd <direvus(at)gmail(dot)com> wrote:

> On 18 March 2011 01:57, hom <obsidianhom(at)gmail(dot)com> wrote:
> >  I try to known how a database is implemented
>
> This objective is so vast and so vague that it's difficult to give
> meaningful help.
>
> I'd emphasise Kevin Grittner's very worthwhile advice.  Try to break
> your question down into smaller, more specific ones.  With a question
> like "how does postgres work" you're likely to flounder.  But with a
> more targeted question, e.g., "what format does postgres use to save
> data to disk" or "how does postgres implement ORDER BY", you can make
> easier progress, and perhaps you could get more useful pointers from
> the people on this list.
>
> Have you read through the "Overview of System Internals" chapter in
> the documentation [1]?  Perhaps it will help you identify the areas
> you wish to explore further, and form more specific questions.
>
> [1] http://www.postgresql.org/docs/current/static/overview.html
>
> Cheers,
> BJ
>
> --
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