HLD and LLD

Subject: HLD and LLD
From: ramesh k raju <rameshraju -dot- k -at- gmail -dot- com>
To: "TECHWR-L" <techwr-l -at- lists -dot- techwr-l -dot- com>
Date: Mon, 16 May 2005 20:36:02 +0530


Hi All

Please explain me the difference between HLD and LLD
And
in the LLD i read the following...
Presentation Layer: (Screens, Reports)
Business Layer
Data Layer

Other Design considerations

Coversion models
Archive and purge models
Back and recovery design
Security architecture
system interfaces
Batch jobs
Performance & Response Time
Cross Reference matrix

Hey I know I am asking just too much...
But please... some insight...

thanx well in advance
Ramesh

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