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

Passing data between packages—Raw Source and Destination


Staging is a very familiar terminology when working on Data Integration and ETL Tools. Staging in simple words means a space for storing data temporarily. In between the ETL steps, there are many times where staging plays an important role for data transfer and ETL cannot be implemented without staging.

The Raw Files format provided by SSIS is a binary format especially for SSIS which stores data in a binary format with special headings related to SSIS metadata. This binary format provides the fastest way to read and access data compared to other staging areas. Raw Source and Destination provides a way to read data from Raw File and Store data there respectively.

In this recipe, we will load data from a source into a Raw File for the purpose of staging. Suppose that this staging Raw File is used after some Control Flow Tasks or after some hours, then we use the Raw File as the source and extract its data to a destination.

How to do it...