By Hasso Plattner, Bernd Leukert
This publication describes the subsequent new release of commercial purposes within the cutting edge new SAP company Suite four SAP HANA (SAP S/4HANA), exploiting the progressive functions of the SAP HANA in-memory database. quite a few real-world examples are offered illustrating the disruptive capability of this expertise and the quantum jump it has facilitated by way of simplicity, ﬂexibility, and velocity for brand new purposes. The intuitive constitution of this ebook bargains a simple enterprise point of view grounded in know-how with a view to let worthwhile enterprise insights drawn from the wealth of real-world adventure of the book’s authors, either trendy ﬁgures within the ﬁeld of industrial program structures: Hasso Plattner and Bernd Leukert.
Hasso Plattner is the co-founder of SAP and the founding father of the Hasso Plattner Institute, affiliated with the college of Potsdam, Germany. Bernd Leukert is a member of the SAP govt Board and the worldwide handling Board of SAP.
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Extra resources for The In-Memory Revolution: How SAP HANA Enables Business of the Future
In the following sections, we will briefly explain the core principles underlying an inmemory database, and then highlight some of the advanced features used in enterprise computing. de. The Superiority of Columnar Storage Let us look at the two storage formats of databases in more detail. 2 shows a subset of synthetic world population data in row and columnar formats. The task is to scan through all people in Germany and calculate the number of males and females. In order to filter out all people in the country Germany using the row format, we have to jump from row to row and check for the country.
Any separation of systems sharing identical data has huge costs not only for redundant storage, but also for data transfer and synchronization between systems. One of the primary reasons for the development of HANA was to bring these systems, Online Transaction Processing (OLTP) and Online Analytical Processing (OLAP), back together into one unified system. The cost savings will be huge and new requirements for real-time enterprises are pressing for such a move. Just as jet aircraft have replaced ocean liners and container ships have replaced bulk carriers, thereby changing the transportation business completely, an in-memory database handling both transaction and analytical workloads will change the enterprise application landscape.
14 presents an overview of the replication mechanism in HANA. All transactions – inserting or updating data – are instantly passed from the master node to the replica(s). Replicas are used for high availability and for increasing the overall performance. All read-only transactions can be executed on the replica without any restrictions. As the maximal potential delay is a few seconds, we do not have any impact on business functions. Database experts might view this potential delay as a problem: does a query run on the latest data, and is there any risk of inconsistency?