December 23, 2012 at 11:20 pm
Hi,
I have to keep in a login history table the user's operating system / operating system version / browser / browser version / device type (mobile/pc etc) / device.
In case there are around a million entries a month and I have to keep two years of data,
should I use dictionary tables or should I keep the full strings descriptions in the login history table?
Thank you.
December 24, 2012 at 9:36 am
Let's assume you can get all that information.
You have conflicting needs: you don't want to slow down the login process, but you also don't want to store full string descriptions for everything for the entire history
You could consider a two-level system: the initial logging captures everything with full strings. Then another process periodically pulls that data into a permanent history table, assigning identifiers in place of strings as required. Then the initial log data is deleted.
This allows you to have a minimal effect on logins but still save space and enhance analysis by assigning codes later.
SQL DBA,SQL Server MVP(07, 08, 09) A socialist is someone who will give you the shirt off *someone else's* back.
December 26, 2012 at 11:53 am
I like your suggestion. Thank you very much.
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