Book Image

Real Time Analytics with SAP Hana

By : Vinay Singh
Book Image

Real Time Analytics with SAP Hana

By: Vinay Singh

Overview of this book

SAP HANA is an in-memory database created by SAP. SAP HANA breaks traditional database barriers to simplify IT landscapes, eliminating data preparation, pre-aggregation, and tuning. SAP HANA and in-memory computing allow you to instantly access huge volumes of structured and unstructured data, including text data, from different sources. Starting with data modeling, this fast-paced guide shows you how to add a system to SAP HANA Studio, create a schema, packages, and delivery unit. Moving on, you’ll get an understanding of real-time replication via SLT and learn how to use SAP HANA Studio to perform this. We’ll also have a quick look at SAP Business Object DATA service and SAP Direct Extractor for Data Load. After that, you will learn to create HANA artifacts—Analytical Privileges and Calculation View. At the end of the book, we will explore the SMART DATA access option and AFL library, and finally deliver pre-packaged functionality that can be used to build information models faster and easier.
Table of Contents (16 chapters)
Real Time Analytics with SAP HANA
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Real-time replication via SAP SLT (System Landscape Transformation) Replication Server


SLT Replication Server is positioned for real-time data replication from SAP and non-SAP sources (SAP supported data bases only). It also provides the ability to perform complex data transformations on the fly. It is mainly recommended for real-time data replication business scenarios.

The replication mechanism of SAP SLT is focused on trigger-based replication functionalities. It uses delta processes for replication. Let's see the various components used in SAP LT Server. The following is the diagrammatical representation of SLT server for SAP and non-SAP sources.

The following diagram shows the various components of the SAP system landscape transformation setup:

  • When the source system is SAP:

  • When the source is a non-SAP system

Let's look at each components one by one:

  • DB trigger: This is the code that updates a database automatically in response to a certain event. For replication, it should be a marker...