Data Warehousing

Technical Article

Introduction to Fast Track Data Warehouse Architectures

  • Article

This paper provides an overview and guide to SQL Server® Fast Track Data Warehouse, a new set of reference architectures created for scale-up (SMP) SQL Server based data warehouse solutions. It includes a summary of the resources available in the reference configuration, the distinguishing features of the approach, and the steps necessary to take full advantage of the new architectures.

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2009-06-26

4,002 reads

Technical Article

The Flaws of the Classic Data Warehouse Architecture, Part 1

  • Article

Visit ten randomly picked customers that own a data warehouse architecture, and you will see that at least eight have developed a classic data warehouse architecture (CDWA). What do I mean by a CDWA? In a CDWA, data is copied periodically from production systems to the central data warehouse.

(1)

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2009-03-20

6,058 reads

Technical Article

Data Warehouse Capacity Planning as Capacity Enforcement

  • Article

Capacity planning is a problem for a data warehouse because it sets contrasting functional requirements against each other. On one hand, data warehouse customers consume data warehouse capacity as they query the data in the data warehouse business intelligence (BI) reporting. Meanwhile, applications consume data warehouse capacity as they load data into a data warehouse through the extract, transform and load (ETL) process.

(3)

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2008-09-19

3,269 reads

Technical Article

Murphy’s Laws of Data Warehousing: What Goes Bump in the Night?

  • Article

Murphy’s Law tells us that whatever can go wrong will go wrong. This axiom applies to all aspects of life, including data warehousing. The following corollaries to Murphy’s Law relate this inevitability of something going “bump” in the night to data warehousing.

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2008-09-15

3,411 reads

Technical Article

Report Warns Of Data Warehouse 'Bottleneck' In Real-Time Analytics

  • Article

In a report entitled "Really Urgent Analytics: The Sweet Spot for Real-Time Data Warehousing," Forrester advises intelligence and knowledge management professionals to familiarize themselves with the various approaches for adapting a data warehouse to meet real-time requirements, and, if necessary, consider bypassing the data warehouse altogether.

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2008-09-02

2,038 reads

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Question of the Day

ORDER BY alias

There is a table tmp_tab:

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression:
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers