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

Introduction


Data transfer packages should be robust in design. There are times that a package can get values from outside and set some ETL parts based on input variable. You learned how to create dynamic SSIS packages in the previous chapters, but to run a package dynamically, you may need to pass some values from outside of the package. Package parameters provide a way to get values from outside of the package. With changing parameter values, the package doesn't need to recompile.

Parameters differ from variables. Variables are designed to work inside the package but parameters are designed to get values from outside. Parameters are only available in new Project Deployment Model.

Legacy Package Deployment Model used package configuration for inter-relation between SSIS packages. As the legacy deployment model is in use in many environments, we will discuss related topics of this method and take a look at the package configurations and their differences in this chapter.

An SSIS package needs...