Click here to monitor SSC
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


How to Design Data Staging Area in a Data Warehouse


How to Design Data Staging Area in a Data Warehouse

Author
Message
nimrodd
nimrodd
Forum Newbie
Forum Newbie (1 reputation)Forum Newbie (1 reputation)Forum Newbie (1 reputation)Forum Newbie (1 reputation)Forum Newbie (1 reputation)Forum Newbie (1 reputation)Forum Newbie (1 reputation)Forum Newbie (1 reputation)

Group: General Forum Members
Points: 1 Visits: 8
HI
I am a trainee in Business Intelligence, I was asked to list the Best Practices of Designing a Data Staging Area. The Best Practices including the Architecture, Development and Maintenance. What infrastructure is needed and should it be on the same database as the Data Warehouse.
Jason-299789
Jason-299789
Ten Centuries
Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)Ten Centuries (1.1K reputation)

Group: General Forum Members
Points: 1132 Visits: 3229
It depends, usually on the complexity of the data and volume.

I personally take the approach of Landing data as is from the Source system, with maybe a few meta data columns added for future use

Then transform it through to a Pre-load area such that its in roughly the same structures as the Dims and Facts, with only the Surrogate keys to be assigned as part of the load process.

Finally Land the data in the Dim/Fact tables with the surrogate keys. this way the Pre-load area acts as a contract layer to the DW.

As for architecture, if you have a number of source systems then you may want an ODS to conform the data as part of a pre-load, if its a single source then you would omit this stage.

Server wise, most of the grunt work is going to be done when transforming the Staging data into the Pre-load interface, after that its mainly lookups for keys, inserts for new data, and updates to existing data.

Most DW load processes should run on a single server, unless they are very large in which case you start to consider separate servers, for the various tiers, such as Staging and ODS on one server, and Warehouse on a second server.

_________________________________________________________________________
SSC Guide to Posting and Best Practices
Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum

































































































































































SQLServerCentral


Search