2017-3-23 · Query Processing: Systems Perspective Introduction to Databases CompSci316 Spring 2017. Announcements (Mon., Mar. 20) •Homework #3 •3.1 and 3.2 due today •Remaining parts to be posted today •Due on Monday •Project •Milestone 2 due next Monday March 27 2. QP so far •Scan-based algorithms
4.1 Requirements for processing continuous perspective query Before explaining the query processing method, we introduce a notion of change point,whic h will be required for the query processing.
2007-11-28 · The perspective query differs from conventional spatial queries in that the levels of details (LOD) of query results depend on the distance between the query point and spatial objects. The objects in the vicinity are to be provided with a higher LOD than those far from the query point.
CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract. In order to provide a streaming service of 3-D spatial objects to the mobile clients on a street, we propose a new query type, called continuous perspective query. The perspective query differs from conventional spatial queries in that the levels of details (LOD) of query results depend on the distance
BibTeX @INPROCEEDINGS{Thiel98multimediamanagement, author = {Ulrich Thiel and Silvia Hollfelder and Andre Everts}, title = {Multimedia management and query processing issues in distributed digital libraries: A HERMES perspective}, booktitle = {Proc. of the 9th Int. Workshop on Database and Expert Systems DEXA'98}, year = {1998}, pages = {84--89}}
Complex Query Processing on Web Graph: a Social Network Perspective Susanta Mitra 1,Aditya Bagchi 2,A.K.Bandyopadhyay 3 1 International Institute of Information T echnology
2015-8-11 · Complex Query Processing on Web Graph: a Social Network Perspective Susanta Mitra 1, Aditya Bagchi 2, A.K.Bandyopadhyay 3 1 International Institute of Information Technology X 1/8/3, Block EP Salt Lake Electronics Complex, Sector-V Kolkata 700091 India [email protected] 2 Computer & Statistical Service Centre Indian Statistical Institute
2008-2-1 · Free Online Library: Complex query processing on Web graph: a social network perspective. by "Journal of Digital Information Management"; Computers and Internet Data compression Methods Data compression software Usage Query processing Analysis Social networks
2013-7-8 · more efficient from the overall price/performance perspective. Finally, pushing processing into the Smart SSDs can reduce the energy consumption of the overall database server/appliance. The energy efficiency of query processing can be improved by reducing its running time and/or by running processing on the low
2015-1-7 · scale data processing. However, to the best of our knowledge, Spark has not been used for spatial join query processing. While Impala is designed as a high performance SQL query engine to process relational queries in-memory for end users, in this study, we have successfully extended Impala to process spatial joins on multi-core CPUs.
examine this problem from a new perspective. In particular, our goal is to support the processing of incremental multidimensional range queries specified via our temporal visual query language (TVQL), a direct manipulation visual query interface. In this paper, we describe the details and
2015-8-11 · Complex Query Processing on Web Graph: a Social Network Perspective Susanta Mitra 1, Aditya Bagchi 2, A.K.Bandyopadhyay 3 1 International Institute of Information Technology X 1/8/3, Block EP Salt Lake Electronics Complex, Sector-V Kolkata 700091 India [email protected] 2 Computer & Statistical Service Centre Indian Statistical Institute
2017-10-20 · See Intelligent query processing in SQL databases. 自动数据库优化 提供对潜在查询性能问题的深入了解、提出建议解决方案并自动解决已标识的问题。 Automatic database tuning provides insight into potential query performance problems, recommends solutions, and
2020-5-24 · The Case for Network-Accelerated Query Processing Alberto Lerner Rana Hussein Philippe Cudre-Mauroux eXascale Infolab, U. of Fribourg—Switzerland From a database perspective, the switch was historically a passive element, routing packets for networking purposes. From a networking perspective, tuples generated by query
2018-8-20 · We discuss various strategies and guidance for constructing graph queries visually, interleaving processing of graph queries and visual actions, visual exploration of graph query results, and automated performance study of visual graph querying frameworks. In addition, this book highlights open problems and new research directions.
While this is not a problem from a query processing perspective, it can put some unnecessary burden on both the application developer (for writing code) as well as the database (for joining information that is always used together). It is not uncommon to see some sensible level of denormalization in 3NF data warehousing models, in a logical
数据采集和传感器技术的进步导致了“高扇入”架构的发展：广泛分布的系统，其边缘由传感器网络、rfid读取 或拖动图片文件到这里 支持 pdf/pptx/ppt 文件
query_processing: Collects data from a query-processing perspective on the worker threads, tasks, wait types, CPU intensive sessions, and blocking tasks. This information produces an overall health state recommendation. io_subsystem: Collects data on IO. In addition to diagnostic data, this component produces a clean healthy or warning health
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2018-8-20 · We discuss various strategies and guidance for constructing graph queries visually, interleaving processing of graph queries and visual actions, visual exploration of graph query results, and automated performance study of visual graph querying frameworks. In addition, this book highlights open problems and new research directions.
2017-8-25 · query processing approach. This approach goes beyond tra-ditional SQL-based query processing approach because (1) all phases of the database software development lifecycle are supported, and (2) it provides database application de-velopers with a more fine-grained control over the semantics of the data access layer and to tune the performance
Local query processing. The local execution engine is able to execute SQL statements directly on the node that a client app is connected to. It processes queries mostly locally, on one node: any data it requires is read on other nodes in the cluster and copied onto the processing node to build the query
Survey of secure range query processing in two-tiered Wireless Sensor Networks CHEN Zhengyu1, DAI Hua2, YE Qingqun2, WANG Min2, GE Ningling2 1. School of Electronic and Information Engineering, Jinling Institute of Technology, Nanjing 211169, China
2013-7-8 · more efficient from the overall price/performance perspective. Finally, pushing processing into the Smart SSDs can reduce the energy consumption of the overall database server/appliance. The energy efficiency of query processing can be improved by reducing its running time and/or by running processing on the low
2015-5-13 · developed for large-scale spatial query processing in Cloud. HadoopGIS1 is a pioneering system that allows spatial joins and several other spatial operations on Hadoop by adopting Hadoop Streaming2 framework and integrating several open source software packages for spatial indexing and geometry computation [4].
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2002-12-1 · Efcient Query Processing for Data Integration Zachary G. Ives A dissertation submitted in partial fulllment of the requirements for the degree of Doctor of Philosophy an outsider’s perspective in many cases Š and for many fruitful discussions and arguments. And I am greatly appreciative of the amount of work they put into
A Query Processing Unit (QPU) in Azure Analysis Services is a unit of measure for relative computational performance for query and data processing. A standard tier S4 instance (offers 400 QPUs) provides four times the computational performance of a standard tier S1 instance (offers 100 QPUs). As a rule of thumb, 1 virtual core approximates to
2020-5-24 · perspective and points out how it di ers from a traditional RDBMS. Section3 presents the overall architecture of the system. Section4 presents the frontend component, which Figure 1: Impala is a distributed query processing system for the Hadoop ecosystem. This gure also shows the ow during query processing.
2017-8-25 · query processing approach. This approach goes beyond tra-ditional SQL-based query processing approach because (1) all phases of the database software development lifecycle are supported, and (2) it provides database application de-velopers with a more fine-grained control over the semantics of the data access layer and to tune the performance
2017-7-13 · A Database Perspective of Social Network Analysis Data Processing a collection of transformation and query operators, and integrity constraints. The social network analysis data workflow can certainly benefit from data management techniques based on an appropriate data model.
The paper presents the “textbook” architecture for distributed query processing and a series of techniques that are particularly useful for distributed database systems. These techniques include special join techniques, techniques to exploit intraquery paralleli sm, techniques to reduce communication costs, and techniques to exploit caching
2019-4-2 · query where k= 1, each tuple belongs to its own equiva-lence class and we o er the guarantees of encrypted query processing. On the other hand, with a k>n 2, we compute on a single equivalence class and the query runs obliviously. By selecting a kbetween these two extremes we o er novel semi-oblivious query processing for data of varying
2017-3-21 · XML query processing, streaming data processing, and information retrieval. During year 2003, who gave me critical feedbacks on the written report from a reviewer’s perspective. Reza also helped me on a project of DHT-based P2P join query processing. I remembered that, Tamer, Reza
2011-3-18 · Rethinking Query Processing for Energy Efficiency: Slowing Down to Win the Race Willis Lang, Ramakrishnan Kandhan, Jignesh M. Patel that proposes looking at query optimization and evaluation in a DBMS from this new perspective. To enable this framework, we propose extending existing query optimizers with an energy consumption model, in
2020-5-24 · perspective and points out how it di ers from a traditional RDBMS. Section3 presents the overall architecture of the system. Section4 presents the frontend component, which Figure 1: Impala is a distributed query processing system for the Hadoop ecosystem. This gure also shows the ow during query processing.
2020-4-29 · Welcome to the second post in our 2-part series describing Snowflake’s integration with Spark. In Part 1, we discussed the value of using Spark and Snowflake together to power an integrated data processing platform, with a particular focus on ETL scenarios.. In this post, we change perspective and focus on performing some of the more resource-intensive processing in Snowflake instead of
2009-12-3 · query processing. Pulse transforms a continuous query op-erating on discrete input data streams during planning, to instead operate on continuous-time models. Our work focuses on designing a query processing plan to operate on these models — Pulse uses continuous-time models as a compact representation of the input data stream and processes this
_____ is evaluated based on client perspective. Index selectivity _____ is a measure of the likelihood that an index will be used in query processing. Function-based index. A(n) _____ is an index based on a specific SQL function or expression. WHERE.