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... Australia A John Wiley & Sons, Inc., Publication High- Performance Parallel Database Processing and Grid Databases High- Performance Parallel Database Processing and Grid Databases David Taniar Monash University, ... parallel operation and can diminish both speed up and scale up, particularly: (i) start up and consolidation costs, (ii) interference and communication, and (iii) skew Start Up and Consolidation ... databases and related areas, it will serve as an indispensable and up-to-date reference Practitioners contemplating building high- performance databases or seeking to gain a good understanding of...

Ngày tải lên: 21/01/2014, 18:20

... database processing can be found in Hameurlain and Morvan (DEXA 1995), Graefe and Cole (ACM TODS 1995), Shatdal and Naughton (SIGMOD 1995), and Ganguly, Goel, and Silberschatz (PODS 1996) Different authors ... processor 1, L–T to processor 2, and the rest to processor Therefore, Students Black and Chan go to processor 1, Robertson and Tan to processor 2, and Williamson and White to the last processor ... number, R1 and jR1 j are fragment table size and number of records of table R in processor 1, respectively The values of R1 and jR1 j may be different from (or the same as), say for example, R2 and...

Ngày tải lên: 21/01/2014, 18:20

... group-by attribute and performs the aggregate function Using Query 4.5 as an example, one node may produce, for example, (Math, 300) and (Science, 500) and another node (Business, 100) and (Science, ... merging costs First, the host processes all records, and hence R and jRj are used in the cost equations, 100 Chapter Parallel Sort and GroupBy not Ri and jRi j Second, since only one processor, namely ... queries in high- performance parallel database systems have also been studied These algorithms are the traditional method covering merge all and hierarchical merging, the two-phase method, and the...

Ngày tải lên: 21/01/2014, 18:20

... the join query result and the product of the two tables R and S For example, if there are 100 and 200 records from table R and table S, respectively, and the join between R and S produces 50 records, ... involve only one aggregate function and a single join High- Performance Parallel Database Processing and Grid Databases, by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel Copyright  2008 ... table S jRj and jSj Number of records in table R and table S jRi j and jSi j Number of records in table R and table S on node i P Page size H Hash table size Query parameters πR and πS Projectivity...

Ngày tải lên: 21/01/2014, 18:20

... spread spread spread, but spread spread spread, but spread not random randomly randomly not random randomly randomly not random randomly Figure 7.26 A comparative table for parallel multi-index ... benefits, and therefore only NRI-1/3 and FRI-1/3 are left as plausible options The decision is determined by striking a balance between storage versus performance 7.9 BIBLIOGRAPHICAL NOTES Standard ... modification, and Feelifl et al (DEXA 2000), proposing an online heat-balancing Index structures to improve query performance were presented by Berchtold et al (EDBT 1998), where the performance of high- dimensional...

Ngày tải lên: 21/01/2014, 18:20

... and 33, and processors), load balancing is achieved by spreading and combining partitions to create more equal loads For example, buckets 11, 22 and 23 are placed at processor 1, buckets 13 and ... technique, Ž Divide and broadcast technique, Ž One-way divide and partial broadcast technique, and Ž Two-way divide and partial broadcast technique b Adopting the two-way divide and partial broadcast ... ceil.x//andg.n x/ < g.n f loor x// Noting that both f x/ and g.x/ are decreasing functions, and since x < ceil.x/, hence f x/ < f ceil.x//, and since x > floor.x/, hence n x < n floor.x/, and g.n...

Ngày tải lên: 21/01/2014, 18:20

... denoted as ST12 Since both transactions need to access DB2 and DB3 , the subtransactions would be (ST12 and ST13 ) and (ST22 and ST23 ) for T1 and T2 , respectively Data access must be synchronized ... interconnected by a high- speed network and therefore, both intra- and interoperator load balancing are adopted Intraoperator load balancing within each node is performed first, and if it is not sufficient, ... queries, whereas Hong and Stonebraker (SIGMOD 1992 and DAPD 1993) proposed optimization based on interoperation and intraoperation for XPRS parallel database Hameurlain and Morvan (ICPP 1993,...

Ngày tải lên: 21/01/2014, 18:20

... a protocol understandable to the originator 336 Chapter 11 Grid Concurrency Control The term “coordinator” is used in Figures 11.5 and 11.6 and “originator” in Figures 11.7 and 11.8 In both cases, ... protocol, and explain how it solves the concurrency issues in the Grid 11.5 Compare and contrast the difference between GCC and any other concurrency control protocols (e.g., distributed databases and ... of the recovery protocol is also given High- Performance Parallel Database Processing and Grid Databases, by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel Copyright  2008 John Wiley...

Ngày tải lên: 21/01/2014, 18:20

... (2001), who designed and implemented a high- level replica selection services Other parallel/distributed and high- performance computing conferences, such as HiPC, Euro-Par, HPDC, and ICPADS, have ... one hand, data replication can increase the performance and availability of the system, while on the other hand, if not designed properly, a replicated system can produce worse performance and ... protocol is a trade-off between strict consistency and the response time of the application On the one hand, some applications need high precision and demand strict consistency (engineering applications,...

Ngày tải lên: 21/01/2014, 18:20

... 16.2 16.3 16.4 16.5 a Querying and association rules, b Querying and sequential patterns, c Querying and clustering, and d Querying and classification Use examples to highlight your points Discuss ... element of s1 , and y the last item of s2 , the new candidate is if y is a single item element, or add y to x otherwise For candidate 2-sequences, for all x F1 and y F1 , join x and y to become ... example of candidate generation The table gives frequent 3-sequences, and we would like to use the joining and pruning to create candidate 4-sequences By joining the first sequence and the...

Ngày tải lên: 21/01/2014, 18:20

... Conference on Database and Expert Systems Applications High- Performance Parallel Database Processing and Grid Databases, by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel Copyright ... I.O., Ramachandran, M and Bowring, N., A high- performance computing method for data allocation in distributed database systems, The Journal of Supercomputing, 39(1):318, 2007 Hua, K.A and Lee, C., ... Sorting and Searching, Addison-Wesley, 1973 Layer, C and Peiderer, H., High Performance Associative Coprocessor Architecture for Advanced Database Searching, Proceedings of Databases and Applications...

Ngày tải lên: 26/01/2014, 15:20

... Talia, D., and Trunfio, P., “Parallel and Grid-Based Data Mining - Algorithms, Models and Systems for High- Performance KDD”, Proceedings of the Data Mining and Knowledge Discovery Handbook, pp ... Deloch, S., “Databases, Web Services, and Grid Computing—Standards and Directions”, Proceedings of Euro-Par, pp 3, 2003 Koparanova, M.G and Risch, T., High- Performance GRID Stream Database Manager ... Stockinger, H., and Stockinger, K., “Models for Replica Synchronisation and Consistency in a Data Grid”, Proceedings of 10th IEEE International Symposium on High Performance and Distributed Computing...

Ngày tải lên: 26/01/2014, 15:20

... Talia, D., and Trunfio, P., “Parallel and Grid-Based Data Mining - Algorithms, Models and Systems for High- Performance KDD”, Proceedings of the Data Mining and Knowledge Discovery Handbook, pp ... Deloch, S., “Databases, Web Services, and Grid Computing—Standards and Directions”, Proceedings of Euro-Par, pp 3, 2003 Koparanova, M.G and Risch, T., High- Performance GRID Stream Database Manager ... M and Rau-Chaplin, A., “The OLAP-Enabled Grid: Model and Query Processing Algorithms”, Proceedings of International Symposium on High Performance Computing Systems (HPCS), pp 4, 2006 Li, J and...

Ngày tải lên: 26/01/2014, 15:20

... High Performance Computing in Science and Engineering ’10 Wolfgang E Nagel r Dietmar B Kröner Michael M Resch r Editors High Performance Computing in Science and Engineering ’10 ... excellent software and methods to address – and solve – the most demanding problems in science and engineering The success of this approach is of significant importance for our community and will also ... K and K , the M and the Γ √ point are indicated, and the reciprocal lattice vectors b1 = 2π/(3a)( 3, −1) and b2 = 4π/(3a)(0, 1) The free dispersion relation (k) is shown in c, where the π and...

Ngày tải lên: 01/06/2014, 09:18

... 10 RTT (ms) 10 Fairness and Friendliness 50 TCP flows and UDT flows between SARA and StarLight Realtime snapshot of the throughput The UDT flows have similar performance and leave enough space ... asynchronously stable • But, inefficient and not scalable – In grid networks (with high bandwidth-delay product) • RTT bias Efficiency of TCP Gb/s link, 200ms RTT, between Tokyo and Chicago 28 minutes On 10 ... Fairness • Fair bandwidth sharing between networks with different RTTs and bottleneck capacities – 330 Mb/s each for the flows from Chicago to Chicago Local via 1Gb/s, Amsterdam via 1Gb/s and Ottawa...

Ngày tải lên: 15/01/2014, 15:59

... their clients to deliver high performance across the entire finance organization and beyond Accordingly, Accenture offers High performance delivered: The benefits of finance and accounting BPO Why ... build and manage a finance function that is efficient and effective—that has the process rigor and control to keep costs in line, while the business savvy to help their companies achieve high performance ... scorecard has helped us stay aligned with expectations and performance We are able to standardize and agree on the measures of success for Accenture and the expectations for Microsoft.” Bottom line...

Ngày tải lên: 17/02/2014, 09:20

... or the difference between K2 and K1, and the reduction in band width Within the eight tested solvents systems, the differences between K2 and K3, and between K4 and K5 in solvent systems (petroleum ... (2H, m, Hb-2 and Hb-6 ) and 2.00 (2H, m, Hb-3 and Hb-5 ) The 13C NMR spectrum of compound displayed signals at d: 22.8 (C-3 and C-5), 27.5 (C-7), 28.8 (C-9 and C-10), 31.5 (C-2 and C-6), 32.9 ... not be separated from each other by CCC Since K2 and K4 were close to K3 and K5, respectively, curcumol (2) and germacrone (3), and curzerene (4) and 1,8-cineole (5) were hardly separated from...

Ngày tải lên: 07/03/2014, 21:20

Ngày tải lên: 09/03/2014, 22:20

... the surface- near areas of PM gears can be densified by a rolling process after sintering (Fig 3) Fig 3: Rolling process and cross section of a rolled PM tooth The influence of the densified surface ... DENSGRAD TM technology Manufacturing of DENSGRAD TM gears High performance gears require beneath good mechanical properties especially high precision tolerances In order to keep gear class (acc ... 3990 and based on the determined material data of the DENDGRAD TM process it was possible to show, that DENSGRAD TM gears can fulfil the requirements with sufficient safety factors This fact and...

Ngày tải lên: 16/03/2014, 01:20

... for HPWS’ superiority and why, despite this, HPWS’ diffusion has been slow The final section provides conclusions High Performance Work Systems Characteristic Features High Performance Work Systems, ... be simplified, standardized, and specialized and that supervision and pay incentives should be used to motivate individuals to perform their tasks well In essence, the thinking and controlling ... companies’ use of systems of high performance work practices 1) diminishes their employee turnover and 2) increases their productivity (sales per employee) and corporate financial performance (stock market...

Ngày tải lên: 17/03/2014, 08:20