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  • Book Overview & Buying Microsoft SQL Server 2012 Integration Services: An Expert Cookbook
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Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

3.9 (12)
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Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

3.9 (12)

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)
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Microsoft SQL Server 2012 Integration Services: An Expert Cookbook
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1
Index

Working with buffer size


SSIS processes data in the pipeline within memory buffers to efficiently load and manipulate datasets in memory. The main advantage of managing data in memory is that it is faster than storing data physically on the disk.

In most packages, changing the SSIS buffer properties is not required, because SSIS does a very good job optimizing it. But even so, it would be possible to tune the Data Flow performance manually to change the values of the SSIS buffer properties. The size of each buffer is determined at runtime and buffers will be created as required in order to process all the data.

The number of buffer created is dependent on how many rows fit into a buffer and the number of rows fitting into a buffer depends on defined data types and the length of each column. There are three internal parameters used to calculated the number of buffers:

  • Estimated Row Size: This is the sum of the maximum sizes of all the columns from the incoming records

  • MinBufferSize: This is...

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