Preethi Sivakumar wrote:
>
> I was in an impression that updation takes less time than deletion.
> I'm getting ur point now.
> Could you please elobarate on this point so that i could proceed with 
> the idea of deletion instead of updation.

Instead of accessing user.profiles (as simply as that) you are going to 
always have to introduce a condition (or use named_scopes but ultimately 
the same condition is there).  This is complicated more so because your 
condition needs to test a column on the join table so you are going to 
be hand crafting all your finds to reference the status column.

If you are accessing a table via user_id and status regularly it makes 
sense to index your join table on (user_id, status) and possibly also on 
(profile_id, status).  This probably adds more overhead than a delete 
would on a simpler table because changing the status will result in 2 
index updates.  Deletes aren't that expensive.

Get your rails application working using rails' conforming techniques 
first. Worry about problems when they occur.  And don't optimise early :)




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