Download e-book for iPad: A Course in In-Memory Data Management: The Inner Mechanics by Hasso Plattner

By Hasso Plattner

ISBN-10: 3642552692

ISBN-13: 9783642552694

ISBN-10: 3642552706

ISBN-13: 9783642552700

Recent achievements in and software program improvement, reminiscent of multi-core CPUs and DRAM capacities of a number of terabytes in keeping with server, enabled the creation of a progressive expertise: in-memory information administration. This know-how helps the versatile and intensely quick research of huge quantities of company facts. Professor Hasso Plattner and his examine crew on the Hasso Plattner Institute in Potsdam, Germany, were investigating and educating the corresponding recommendations and their adoption within the software program for years.

This booklet is predicated on a web path that used to be first introduced in autumn 2012 with greater than 13,000 enrolled scholars and marked the winning start line of the openHPI e-learning platform. The direction is principally designed for college students of laptop technological know-how, software program engineering, and IT comparable topics, yet addresses company specialists, software program builders, expertise specialists, and IT analysts alike. Plattner and his workforce concentrate on exploring the internal mechanics of a column-oriented dictionary-encoded in-memory database. lined themes contain - among others - actual facts garage and entry, simple database operators, compression mechanisms, and parallel subscribe to algorithms. past that, implications for destiny firm purposes and their improvement are mentioned. step-by-step, readers will comprehend the unconventional ameliorations and benefits of the recent know-how over conventional row-oriented, disk-based databases.

In this thoroughly revised 2nd version, we contain the suggestions of hundreds of thousands after all contributors on openHPI and take into consideration newest developments in not easy- and software program. more suitable figures, reasons, and examples additional ease the knowledge of the strategies awarded. We introduce complicated facts administration concepts equivalent to obvious mixture caches and supply new showcases that show the opportunity of in-memory databases for 2 diversified industries: retail and lifestyles sciences.

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Extra resources for A Course in In-Memory Data Management: The Inner Mechanics of In-Memory Databases

Example text

Yet logging and recovery still require disks as nonvolatile data storage to ensure data consistency in case of failures. , find, join, or aggregation can anticipate that data resides in main memory. Thus, operators are implemented differently moving the focus from optimizing for disk access towards optimizing for main memory access and CPU utilization (see Chap. 4). This apparently subtle difference of moving the primary persistence has a vast impact on performance even when disk-based databases are completely memory resistent.

These principles are leveraged by using caches, combining the fast access to SRAM chips with the high capacity of DRAM chips. 1 gives an example of the memory and cache hierarchies on the Intel Ivy Bridge architecture. Small and fast caches close to the CPUs built of SRAM cells 1 Moore’s Law is the assumption that the number of transistors on integrated circuits doubles every 18–24 months. This assumption still holds true till today. 3 Cache Internals 25 Intel Multi-Core Core 0 Intel Multi-Core Core 1 Core N Core N TLB Core 1 Core 0 TLB L1 Cache Line L1 L1 L2 Cache Line L2 L2 L3 Cache Line Memory Page L3 Cache QPI Main Memory QPI L3 Cache Main Memory Fig.

G. fees for delayed or canceled deliveries or costs for express delivery if the manufacturer is not able to send out all goods in time. g. stock level aggregates per day. Using in-memory databases enables ATP checks to be performed on the latest data without using pre-aggregated totals. Thus, manufacturing and rescheduling decisions can be taken on real-time data. Furthermore, removing aggregates simplifies the overall system architecture significantly whilst adding flexibility. 7 Mathematical and Scientific Applications Mathematics is the most powerful, omnipresent tool we have.

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A Course in In-Memory Data Management: The Inner Mechanics of In-Memory Databases by Hasso Plattner

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