What are redundant structures in Databases?

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What are redundant structures in Databases?

Minnesota - Viking

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May 9, 2010 at 9:27 pm

#386888

I have an interview coming up
One of the areas i will be question upon is "Redundant Structures"?
Can some one tell me what are they ? Any resource where i can study them ?
Tried googling and searching through forums 🙁 didnt work
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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

No idea, it's not a standard SQL term or definition. I'd ask for more details.

Gail Shaw
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SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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SQLBalls SSCarpal Tunnel Points: 4621 More actions · Answer 2

Here are the only things I could find

A structure with extra internal load paths or external supports in excess of the minimum required for stability.

it seems like it could be a way of talking about denormalization. I agree though it sounds like a home grown term

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Minnesota - Viking Hall of Fame Points: 3469 More actions · Answer 3

@@Gail.. Thank You

@@Bradley: Yupe.. i too guess it should be near to Denormalization.

Anyways i will update you if i attend this interview.

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PaulB-TheOneAndOnly SSC Guru Points: 66772 More actions · Answer 4

Z@f (5/9/2010)
... will be question upon "Redundant Structures"

This expression applies to optimization structures in large environments like multitera byte data warehouse, such structures come in two flavors which are non-redundant and redundant.

A good example of each one would be...

non-redundant... table partitioning.

redundant... materialized views.

As you can see redundant structures originate redundant data while non-redundant structures doesn't.

Hope this helps.

_____________________________________
Pablo (Paul) Berzukov

Author of Understanding Database Administration available at Amazon and other bookstores.

Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.

Jeff Moden SSC Guru Points: 1004406 More actions · Answer 5

~~Heh... I wonder if "redundant" refers to mirroring, clustering, replication, etc.~~

{edit} Heh... never mind. Simple GOOGLE search gave me more answers about "Redundant Structures" that I'm embarassed. I searched for...

"Redundant Structures" SQL SERVER

Another good interview question might be "As a DBA or SQL Developer, how would you find out what 'Redundant Structures' are as they pertain to SQL Server." 😉

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

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