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Cache Conscious Column Organization In In Memory Column Stores
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Book Synopsis Cache Conscious Column Organization in In-memory Column Stores by : David Schwalb
Download or read book Cache Conscious Column Organization in In-memory Column Stores written by David Schwalb and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cost models are an essential part of database systems, as they are the basis of query performance optimization. Based on predictions made by cost models, the fastest query execution plan can be chosen and executed or algorithms can be tuned and optimised. In-memory databases shifts the focus from disk to main memory accesses and CPU costs, compared to disk based systems where input and output costs dominate the overall costs and other processing costs are often neglected. However, modelling memory accesses is fundamentally different and common models do not apply anymore. This work presents a detailed parameter evaluation for the plan operators scan with equality selection, scan with range selection, positional lookup and insert in in-memory column stores. Based on this evaluation, a cost model based on cache misses for estimating the runtime of the considered plan operators using different data structures is developed. Considered are uncompressed columns, bit compressed and dictionary encoded columns with sorted and unsorted dictionaries. Furthermore, tree indices on the columns and dictionaries are discussed. Finally, partitioned columns consisting of one partition with a sorted and one with an unsorted dictionary are investigated. New values are inserted in the unsorted dictionary partition and moved periodically by a merge process to the sorted partition. An efficient attribute merge algorithm is described, supporting the update performance required to run enterprise applications on read-optimised databases. Further, a memory traffic based cost model for the merge process is provided.
Book Synopsis A Course in In-Memory Data Management by : Hasso Plattner
Download or read book A Course in In-Memory Data Management written by Hasso Plattner and published by Springer. This book was released on 2014-05-28 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent achievements in hardware and software development, such as multi-core CPUs and DRAM capacities of multiple terabytes per server, enabled the introduction of a revolutionary technology: in-memory data management. This technology supports the flexible and extremely fast analysis of massive amounts of enterprise data. Professor Hasso Plattner and his research group at the Hasso Plattner Institute in Potsdam, Germany, have been investigating and teaching the corresponding concepts and their adoption in the software industry for years. This book is based on an online course that was first launched in autumn 2012 with more than 13,000 enrolled students and marked the successful starting point of the openHPI e-learning platform. The course is mainly designed for students of computer science, software engineering, and IT related subjects, but addresses business experts, software developers, technology experts, and IT analysts alike. Plattner and his group focus on exploring the inner mechanics of a column-oriented dictionary-encoded in-memory database. Covered topics include - amongst others - physical data storage and access, basic database operators, compression mechanisms, and parallel join algorithms. Beyond that, implications for future enterprise applications and their development are discussed. Step by step, readers will understand the radical differences and advantages of the new technology over traditional row-oriented, disk-based databases. In this completely revised 2nd edition, we incorporate the feedback of thousands of course participants on openHPI and take into account latest advancements in hard- and software. Improved figures, explanations, and examples further ease the understanding of the concepts presented. We introduce advanced data management techniques such as transparent aggregate caches and provide new showcases that demonstrate the potential of in-memory databases for two diverse industries: retail and life sciences.
Book Synopsis Modeling and enacting complex data dependencies in business processes by : Meyer, Andreas
Download or read book Modeling and enacting complex data dependencies in business processes written by Meyer, Andreas and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enacting business processes in process engines requires the coverage of control flow, resource assignments, and process data. While the first two aspects are well supported in current process engines, data dependencies need to be added and maintained manually by a process engineer. Thus, this task is error-prone and time-consuming. In this report, we address the problem of modeling processes with complex data dependencies, e.g., m:n relationships, and their automatic enactment from process models. First, we extend BPMN data objects with few annotations to allow data dependency handling as well as data instance differentiation. Second, we introduce a pattern-based approach to derive SQL queries from process models utilizing the above mentioned extensions. Therewith, we allow automatic enactment of data-aware BPMN process models. We implemented our approach for the Activiti process engine to show applicability.
Book Synopsis Business process architectures with multiplicities by : Eid-Sabbagh, Rami-Habib
Download or read book Business process architectures with multiplicities written by Eid-Sabbagh, Rami-Habib and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Explorative authoring of Active Web content in a mobile environment by : Calmez, Conrad
Download or read book Explorative authoring of Active Web content in a mobile environment written by Calmez, Conrad and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developing rich Web applications can be a complex job - especially when it comes to mobile device support. Web-based environments such as Lively Webwerkstatt can help developers implement such applications by making the development process more direct and interactive. Further the process of developing software is collaborative which creates the need that the development environment offers collaboration facilities. This report describes extensions of the webbased development environment Lively Webwerkstatt such that it can be used in a mobile environment. The extensions are collaboration mechanisms, user interface adaptations but as well event processing and performance measuring on mobile devices.
Book Synopsis Proceedings of the 6th Ph.D. Retreat of the HPI Research School on Service-oriented Systems Engineering by : Meinel, Christoph
Download or read book Proceedings of the 6th Ph.D. Retreat of the HPI Research School on Service-oriented Systems Engineering written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book openHPI written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Repairing event logs using stochastic process models by : Rogge-Solti, Andreas
Download or read book Repairing event logs using stochastic process models written by Rogge-Solti, Andreas and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling and Verifying Dynamic Evolving Service-Oriented Architectures by : Giese, Holger
Download or read book Modeling and Verifying Dynamic Evolving Service-Oriented Architectures written by Giese, Holger and published by Universitätsverlag Potsdam. This book was released on 2013-08-15 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Enriching Raw Events to Enable Process Intelligence by : Nico Herzberg
Download or read book Enriching Raw Events to Enable Process Intelligence written by Nico Herzberg and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 7th Ph.D. Retreat of the HPI Research School on Service-oriented Systems Engineering by : Meinel, Christoph
Download or read book Proceedings of the 7th Ph.D. Retreat of the HPI Research School on Service-oriented Systems Engineering written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2014-10-09 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and Implementation of service-oriented architectures imposes a huge number of research questions from the fields of software engineering, system analysis and modeling, adaptability, and application integration. Component orientation and web services are two approaches for design and realization of complex web-based system. Both approaches allow for dynamic application adaptation as well as integration of enterprise application. Commonly used technologies, such as J2EE and .NET, form de facto standards for the realization of complex distributed systems. Evolution of component systems has lead to web services and service-based architectures. This has been manifested in a multitude of industry standards and initiatives such as XML, WSDL UDDI, SOAP, etc. All these achievements lead to a new and promising paradigm in IT systems engineering which proposes to design complex software solutions as collaboration of contractually defined software services. Service-Oriented Systems Engineering represents a symbiosis of best practices in object-orientation, component-based development, distributed computing, and business process management. It provides integration of business and IT concerns. The annual Ph.D. Retreat of the Research School provides each member the opportunity to present his/her current state of their research and to give an outline of a prospective Ph.D. thesis. Due to the interdisciplinary structure of the Research Scholl, this technical report covers a wide range of research topics. These include but are not limited to: Self-Adaptive Service-Oriented Systems, Operating System Support for Service-Oriented Systems, Architecture and Modeling of Service-Oriented Systems, Adaptive Process Management, Services Composition and Workflow Planning, Security Engineering of Service-Based IT Systems, Quantitative Analysis and Optimization of Service-Oriented Systems, Service-Oriented Systems in 3D Computer Graphics sowie Service-Oriented Geoinformatics.
Book Synopsis Extending a Java Virtual Machine to Dynamic Object-oriented Languages by : Pape, Tobias
Download or read book Extending a Java Virtual Machine to Dynamic Object-oriented Languages written by Pape, Tobias and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Babelsberg written by Felgentreff, Tim and published by Universitätsverlag Potsdam. This book was released on 2014-10-09 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Constraints allow developers to specify desired properties of systems in a number of domains, and have those properties be maintained automatically. This results in compact, declarative code, avoiding scattered code to check and imperatively re-satisfy invariants. Despite these advantages, constraint programming is not yet widespread, with standard imperative programming still the norm. There is a long history of research on integrating constraint programming with the imperative paradigm. However, this integration typically does not unify the constructs for encapsulation and abstraction from both paradigms. This impedes re-use of modules, as client code written in one paradigm can only use modules written to support that paradigm. Modules require redundant definitions if they are to be used in both paradigms. We present a language – Babelsberg – that unifies the constructs for en- capsulation and abstraction by using only object-oriented method definitions for both declarative and imperative code. Our prototype – Babelsberg/R – is an extension to Ruby, and continues to support Ruby’s object-oriented se- mantics. It allows programmers to add constraints to existing Ruby programs in incremental steps by placing them on the results of normal object-oriented message sends. It is implemented by modifying a state-of-the-art Ruby virtual machine. The performance of standard object-oriented code without con- straints is only modestly impacted, with typically less than 10% overhead compared with the unmodified virtual machine. Furthermore, our architec- ture for adding multiple constraint solvers allows Babelsberg to deal with constraints in a variety of domains. We argue that our approach provides a useful step toward making con- straint solving a generic tool for object-oriented programmers. We also provide example applications, written in our Ruby-based implementation, which use constraints in a variety of application domains, including interactive graphics, circuit simulations, data streaming with both hard and soft constraints on performance, and configuration file Management.
Book Synopsis HPI Future SOC Lab : proceedings 2011 by : Meinel, Christoph
Download or read book HPI Future SOC Lab : proceedings 2011 written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Together with industrial partners Hasso-Plattner-Institut (HPI) is currently establishing a “HPI Future SOC Lab,” which will provide a complete infrastructure for research on on-demand systems. The lab utilizes the latest, multi/many-core hardware and its practical implementation and testing as well as further development. The necessary components for such a highly ambitious project are provided by renowned companies: Fujitsu and Hewlett Packard provide their latest 4 and 8-way servers with 1-2 TB RAM, SAP will make available its latest Business byDesign (ByD) system in its most complete version. EMC² provides high performance storage systems and VMware offers virtualization solutions. The lab will operate on the basis of real data from large enterprises. The HPI Future SOC Lab, which will be open for use by interested researchers also from other universities, will provide an opportunity to study real-life complex systems and follow new ideas all the way to their practical implementation and testing. This technical report presents results of research projects executed in 2011. Selected projects have presented their results on June 15th and October 26th 2011 at the Future SOC Lab Day events.
Book Synopsis Database Systems for Advanced Applications by : Weiyi Meng
Download or read book Database Systems for Advanced Applications written by Weiyi Meng and published by Springer. This book was released on 2013-04-17 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two volume set LNCS 7825 and LNCS 7826 constitutes the refereed proceedings of the 18th International Conference on Database Systems for Advanced Applications, DASFAA 2013, held in Wuhan, China, in April 2013. The 51 revised full papers and 10 short papers presented together with 2 invited keynote talks, 1 invited paper, 3 industrial papers, 9 demo presentations, 4 tutorials and 1 panel paper were carefully reviewed and selected from a total of 227 submissions. The topics covered in part 1 are social networks; query processing; nearest neighbor search; index; query analysis; XML data management; privacy protection; and uncertain data management; and in part 2: graph data management; physical design; knowledge management; temporal data management; social networks; query processing; data mining; applications; and database applications.
Book Synopsis Database and Expert Systems Applications by : Sven Hartmann
Download or read book Database and Expert Systems Applications written by Sven Hartmann and published by Springer. This book was released on 2016-08-05 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two volume set LNCS 9827 and LNCS 9828 constitutes the refereed proceedings of the 27th International Conference on Database and Expert Systems Applications, DEXA 2016, held in Porto, Portugal, September 2016. The 39 revised full papers presented together with 29 short papers were carefully reviewed and selected from 137 submissions. The papers discuss a range of topics including: Temporal, Spatial, and High Dimensional Databases; Data Mining; Authenticity, Privacy, Security, and Trust; Data Clustering; Distributed and Big Data Processing; Decision Support Systems, and Learning; Data Streams; Data Integration, and Interoperability; Semantic Web, and Data Semantics; Social Networks, and Network Analysis; Linked Data; Data Analysis; NoSQL, NewSQL; Multimedia Data; Personal Information Management; Semantic Web and Ontologies; Database and Information System Architectures; Query Answering and Optimization; Information Retrieval, and Keyword Search; Data Modelling, and Uncertainty.
Book Synopsis In Memory Data Management and Analysis by : Arun Jagatheesan
Download or read book In Memory Data Management and Analysis written by Arun Jagatheesan and published by Springer. This book was released on 2015-01-13 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post conference proceedings of the First and Second International Workshops on In Memory Data Management and Analysis held in Riva del Garda, Italy, August 2013 and Hangzhou, China, in September 2014. The 11 revised full papers were carefully reviewed and selected from 18 submissions and cover topics from main-memory graph analytics platforms to main-memory OLTP applications.
