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SQL Server 2017 Integration Services Cookbook

You're reading from  SQL Server 2017 Integration Services Cookbook

Product type Book
Published in Jun 2017
Publisher Packt
ISBN-13 9781786461827
Pages 558 pages
Edition 1st Edition
Languages
Authors (6):
Christian Cote Christian Cote
Profile icon Christian Cote
Dejan Sarka Dejan Sarka
Profile icon Dejan Sarka
David Peter Hansen David Peter Hansen
Matija Lah Matija Lah
Profile icon Matija Lah
Samuel Lester Samuel Lester
Christo Olivier Christo Olivier
View More author details

Table of Contents (18) Chapters

Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
1. SSIS Setup 2. What Is New in SSIS 2016 3. Key Components of a Modern ETL Solution 4. Data Warehouse Loading Techniques 5. Dealing with Data Quality 6. SSIS Performance and Scalability 7. Unleash the Power of SSIS Script Task and Component 8. SSIS and Advanced Analytics 9. On-Premises and Azure Big Data Integration 10. Extending SSIS Custom Tasks and Transformations 11. Scale Out with SSIS 2017

Using the cascading lookup pattern


Typically, the structure and the semantics of a data flow source correspond to the data model used in the source data store; this structure, or the semantics used to represent data in the source system, might not be aligned with the structure or the semantics of the destination system.

For instance, the client entity in the source system might be represented by a single set, but the data warehouse might have to distinguish between a client, who is a person, and a client that represents a company. To correctly interpret the source data, you would need appropriate logic in the data flow to differentiate between source rows representing persons, and source rows representing companies, before loading the data correctly into the data destination data store.

How to do it...

  1. In SSDT, open the AdventureWorksETL.sln solution located in the C:\SSIS2016Cookbook\Chapter06\Starter\AdventureWorksETL\ folder.
  2. Make sure that the CascadingLookup.dtsx SSIS package is open, locate...
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