Book Image

Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

Book Image

Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

Overview of this book

SQL Server Integration Services (SSIS) is a leading tool in the data warehouse industry - used for performing extraction, transformation, and load operations. This book is aligned with the most common methodology associated with SSIS known as Extract Transform and Load (ETL); ETL is responsible for the extraction of data from several sources, their cleansing, customization, and loading into a central repository normally called Data Warehouse or Data Mart.Microsoft SQL Server 2012 Integration Services: An Expert Cookbook covers all the aspects of SSIS 2012 with lots of real-world scenarios to help readers understand usages of SSIS in every environment. Written by two SQL Server MVPs who have in-depth knowledge of SSIS having worked with it for many years.This book starts by creating simple data transfer packages with wizards and illustrates how to create more complex data transfer packages, troubleshoot packages, make robust SSIS packages, and how to boost the performance of data consolidation with SSIS. It then covers data flow transformations and advanced transformations for data cleansing, fuzzy and term extraction in detail. The book then dives deep into making a dynamic package with the help of expressions and variables, and performance tuning and consideration.
Table of Contents (23 chapters)
Microsoft SQL Server 2012 Integration Services: An Expert Cookbook
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Multicast: creating copies of the data stream


The Multicast transformation component is used when the data in the pipeline needs to be transferred to more than one flow. This component receives a single data input and makes multiple copies of that data that are available through as many outputs as needed. Each of the outputs coming out of Multicast can be used in different ways. For example one output could make an aggregation on data that joins another output in a later phase, or for example we could create several outputs to insert/load the same data into different destinations.

The difference between the Multicast and the Conditional Split components (referred in a previous recipe), is that Multicast directs each row of the source to every output, whereas Conditional Split directs each row to a single output.

Getting ready

To get ready for this recipe, use the following steps:

  1. Open SQL Server Business Intelligence Development Studio (BIDS) and create a new SSIS project.

  2. Provide a name and...