Articles

Technical Article

Change Data Capture with SSIS

In this presentation, Brian Knight shows you how to use canned SSIS components to detect data changes in a source table and only load new or conditionally update changed records. He shows you two methods: one using the OLE DB command and another using a set based operation and demostrates you the performance differences between the two.

2007-01-12

2,108 reads

SQLServerCentral Article

Generating Surrogate-Keys for Type 1 and Type 2 dimensions using SSIS

We published a very interesting article about data warehousing in the SQL Server Standard awhile back. However the article was abridged and the author, a very respected data warehousing professional asked that we publish the entire thing here. So we bring you Harsh Bhaiya's very popular ETL treatise.

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2007-01-10

13,345 reads

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Locking Hierarchies

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Question of the Day

Locking Hierarchies

You have a table [dbo].[orders] without a Clustered Index (Heap). The table does not have any other nonclustered indexes! You rund the following command in Read Committed Isolation Level:

SELECTo_orderdate,
        o_orderkey,
        o_custkey,
        o_storekey
FROMdbo.orders
WHEREo_orderkey = 3877;

What locking hierarchy will Microsoft SQL Server use?

 

See possible answers