distributed databases and distributed data
Distributed data reconciliation and bias estimation with non gaussian noise for sensor network
Ngày tải lên :
14/09/2015, 08:38
... THE THESIS CHAPTER DISTRIBUTED DATA RECONCILIATION (DDR) 2.1 INTRODUCTION 2.2 DATA RECONCILIATION (DR) 2.3 DISTRIBUTED DATA RECONCILIATION (DDR) ... an m × N matrix, then m < N and rank ( A) = m 12 2.3 Distributed Data Reconciliation (DDR) 2.3.1 Overview This section presents in detail the proposed distributed data reconciliation (DDR) algorithm ... y1 and σ Also, the constraint matrix A must be stored in Node Distributed DR: In the proposed distributed DR, instead of Node doing all the processing, Node and Node share the processing and...
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Tài liệu Oracle8 Distributed Database Systems ppt
Ngày tải lên :
17/01/2014, 09:20
... Server Versions Distributed Databases and Distributed Processing Distributed Databases and Database Replication Heterogeneous Distributed Databases Heterogeneous ... Databases and Database Links Each database in a distributed database is distinct from all other databases in the system and has its own global database name Oracle forms a database’s global database ... both local and remote data and modify the global database in real-time Note: This book discusses pure distributed databases Distributed Database Concepts 1-7 Heterogeneous Distributed Databases...
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Tài liệu Spanner: Google’s Globally-Distributed Database pdf
Ngày tải lên :
19/02/2014, 12:20
... reads and writes on a bulky data move Instead, movedir registers the fact that it is starting to move data and moves the data in the background When it has moved all but a nominal amount of the data, ... Spanner universe A zone has one zonemaster and between one hundred and several thousand spanservers The former assigns data to spanservers; the latter serve data to clients The per-zone location proxies ... some benchmarks on Spanner’s performance and TrueTime behavior, and discusses the experiences of F1 Sections 6, 7, and describe related and future work, and summarize our conclusions Implementation...
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Oracle8 Distributed Database Systems Release 8.0 pot
Ngày tải lên :
07/03/2014, 23:20
... Server Versions Distributed Databases and Distributed Processing Distributed Databases and Database Replication Heterogeneous Distributed Databases Heterogeneous ... Databases and Database Links Each database in a distributed database is distinct from all other databases in the system and has its own global database name Oracle forms a database’s global database ... both local and remote data and modify the global database in real-time Note: This book discusses pure distributed databases Distributed Database Concepts 1-7 Heterogeneous Distributed Databases...
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Mariposa: a wide-area distributed database system doc
Ngày tải lên :
23/03/2014, 12:20
... keeping track of (and charging for) available bandwidth between itself and ni−1 and therefore maintains the bandwidth profile Call the bandwidth profile between node ni and node ni−1 Bi and the price ... for distributed data management In: Schneider HJ (ed) Distributed data bases North-Holland, Amsterdam Mackert LF, Lohman GM (1986) R* Optimizer validation and performance evaluation for distributed ... between complete but costly and cheaper but incomplete and partial data and processing Conclusions We present a distributed microeconomic approach for managing query execution and storage management...
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a universal execution engine for distributed data-flow computing doc
Ngày tải lên :
27/06/2014, 23:20
... MapReduce and Dryad), the data space and coordination space are disjoint, which prevents these systems from supporting data- dependent control flow To support data- dependent control flow, data must ... (b) Task and object tables Figure 2: A C IEL job is represented by a dynamic task graph, which contains tasks and objects (§3.1) In this example, root task A spawns tasks B, C and D, and delegates ... cluster that is used for distributed data- flow computing (§3.3) 3.1 Dynamic task graphs In this subsection, we define the three C IEL primitives— objects, references and tasks and explain how they...
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Principles of distributed database systerms pdf
Ngày tải lên :
29/06/2014, 13:20
... Tamer taught courses at ETH Z¨ rich u (PDDBS – Parallel and Distributed Databases in Spring 2006) and at NUS (CS5225 – Parallel and Distributed Database Systems in Fall 2010) using parts of this edition ... task of developing distributed software 1.2 What is a Distributed Database System? We define a distributed database as a collection of multiple, logically interrelated databases distributed over ... centralization, and that is exactly what the distributed database technology attempts to achieve In this chapter we define the fundamental concepts and set the framework for discussing distributed databases...
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Tiểu luận môn Mạng Máy Tính Token Ring – IEEE 802.5 và Fiber Distributed Data Interface (FDDI)
Ngày tải lên :
31/10/2014, 22:03
... truyền tòa nhà khu vực lân cận 7 Fiber Distributed Data Interface (FDDI) • FDDI sử dụng mã Manchester tần số lớn Mạng FDDI sử dụng mã 4B/5B 7 Fiber Distributed Data Interface (FDDI) • Mỗi ký hiệu ... Fiber Distributed Data Interface (FDDI) FDDI dựa đồ hình vòng Ring chiều, sử dụng sợi quang để truyền dẫn trạm với tốc độ 100Mbps, trải rộng tới 200Kms dùng cho 1000 người sử dụng 7 Fiber Distributed ... Token Frame • Cơ chế thẻ ưu tiên • Xử lý lỗi mạng • Ưu nhược điểm mạng Token Ring • Fiber Distributed Data Interface (FDDI) Giới thiệu • Mạng Token Ring IBM phát triển từ năm 1970s • Dựa mô hình...
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Distributed Data Gathering in MultiSink Sensor Networks with Correlated Sources
Ngày tải lên :
14/04/2015, 14:22
... the total outgoing data flows must equal to the sum of the total incoming data flows and the non-negative data collection rate Ri Since the sensor nodes relay all incoming data flows, only the ... algorithm is asynchronous, distributed, and supports large-scale sensor networks with multiple sink nodes Data gathering with correlated sources in sensor networks and resource allocation with ... transporting the data from the sensor nodes to the sink nodes is minimized If the wireless links have unlimited bandwidth capacities, then each sensor node can transmit its collected data via the...
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Distributed database
Ngày tải lên :
17/01/2016, 00:09
... control TH 09.04.09 Distributed Query Processing: overview of query processing and query optimization, query decomposition and data localization TH 16.04.09 Query decomposition and data localization: ... Rodrigue: Main memory-based algorithms for efficient parallel aggregation for temporal databases Distributed and Parallel Databases, vol 16, pages 123-163, 2004 The project concludes with a final report ... 30.04.09 Optimization of Distributed Queries: basic concepts, distributed cost model, database statistics TH 07.05.09 Optimization of Distributed Queries: ordering of joins and semijoins, query optimization...
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Creating and Management Data Base
Ngày tải lên :
01/09/2012, 09:09
... trợ giải pháp máy chủ standby RDBMS and Data Management/ Session 7/18 of 25 Nhóm tập tin ghi vết giao dịch Thêm tập tin ghi vết vào sở liệu Cú pháp: ALTER DATABASE database_name { } [;] ::= ... tạo Cú pháp: CREATE DATABASE database_snapshot_name ON ( NAME = logical_file_name, FILENAME = ‘os_file_name’ ) [ , n ] AS SNAPSHOT OF source_database_name [;] RDBMS and Data Management/ Session ... COLLATE collation_name ] ] [;] RDBMS and Data Management/ Session 7/15 of 25 Nhóm tập tin ghi vết giao dịch Thêm nhóm tập tin vào CSDL có: Cú pháp ALTER DATABASE database_name { ...
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Saving and Restoring Data
Ngày tải lên :
03/10/2013, 00:20
... XML for the data content of an existing DataSet instance, call its WriteXml method, passing an output file name C# DataSet infoSet = new DataSet(); // - Add tables, relations, and data, then ... format Reading XML Both the DataSet and DataTable classes include ReadXml and ReadXmlSchema counterparts to the XML-writing methods To use them, create a new DataSet or DataTable instance; then ... XmlReadMode.ReadSchema Reconstructs the DataTable members of the DataSet without loading in the data Chapter 7 Saving and Restoring Data 111 ■■ XmlReadMode.IgnoreSchema Loads in the data, ignoring any schema...
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Tài liệu Managing and tabulating data in Excel docx
Ngày tải lên :
09/12/2013, 15:15
... Icons relevant to External Data 195 CHAPTER 13 13.1 Data from the Internet 195 READING ASCII TEXT DATA 198 Understanding ASCII Text data 199 Why is data stored and distributed in this format? ... “1995,” “2000” and “2010”) 2.2.A NEW DATA You can enter the data for a new case/row by clicking on “New” and typing in the data for the first series, pressing the “TAB and then entering the data for ... Two Roles Of Data/ Form 38 CHAPTER 3.1 REDUCING ERRORS IN DATA ENTRY— VALIDATION AND AUTOCORRECT 40 Validating Data During Data- Entry 40 3.1.a 3.1.b 3.1.c 3.1.d Validation for numeric data 42 Message...
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Tài liệu Backups and Hidden Data doc
Ngày tải lên :
10/12/2013, 14:16
... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... understand the threats and have a chance at finding them Let’s learn a bit more about how data can be hidden on a computer system It makes sense for attackers or criminals to hide files and data ... with Windows and Unix OS • Viruses: File Infector and Boot Record Infector, Macro • Tools like CHKDSK and MEM may help locate malicious code • Files in DOS and Unix can be hidden and found using...
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Tài liệu Module 10: Backing Up and Restoring Data pdf
Ngày tải lên :
10/12/2013, 16:15
... for backing up and restoring data Module 10: Backing Up and Restoring Data Introduction to Backing Up and Restoring Data Slide Objective Backup To introduce backing up and restoring data Lead-in ... topics and objectives ! ! Backing Up Data ! Restoring Data ! In this module, you will learn how to back up and restore data Preparing to Back Up Data ! Lead-in Introduction to Backing Up and Restoring ... lost and corrupt data A user must have the appropriate user right or permission to back up and restore data Permissions and User Rights Are Required to Back Up and Restore Restore Restore Data...
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Tài liệu Module 4: Grouping and Summarizing Data doc
Ngày tải lên :
11/12/2013, 14:15
... the skills to group and summarize data by using aggregate functions These skills include using the GROUP BY and HAVING clauses to summarize and group data and using the ROLLUP and CUBE operators ... the skills to group and summarize data by using aggregate functions These skills include using the GROUP BY and HAVING clauses to summarize and group data and using the ROLLUP and CUBE operators ... summarize data by groups ! Use the ROLLUP and CUBE operators and GROUPING function to generate summary data ! Use the COMPUTE and COMPUTE BY clauses to generate control-break reports, grand totals, and...
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Tài liệu Java and XML Data Binding Brett McLaughlin Publisher ppt
Ngày tải lên :
12/12/2013, 11:15
... between data- driven and business-driven APIs and explains when one model is preferable over the other It then explains how constraint modeling fits into the data binding picture and how data binding ... open source data binding API, and this chapter details its ins and outs You'll see that Quick offers ideas and processes that are entirely different from most data binding frameworks and you'll ... Command lines and options that should be typed verbatim Names and keywords in Java programs, including method names, variable names, and class names XML element names and tags, attribute names, and...
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Tài liệu Analytical Methods: EViews and Panel Data ppt
Ngày tải lên :
20/12/2013, 18:15
... refer to variables by the first part name and the question mark Thus, if we type a command using GDP? EViews uses all three GDP series for the USA, Canada, and Mexico Notice the button PoolGenr PoolGenr ... coefficients and intercepts Even though you may fail to reject the hypotheses that represent restrictions that you impose, the hypotheses may not be perfectly true, and that may affect the estimators and ... Hypothesis Testing In panel data models (as in single-equation multiple-regression models) we are interested in testing two types of hypotheses: hypotheses about the variances and covariances of the...
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Tài liệu Backups and Hidden Data ppt
Ngày tải lên :
21/12/2013, 05:16
... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... understand the threats and have a chance at finding them Let’s learn a bit more about how data can be hidden on a computer system It makes sense for attackers or criminals to hide files and data ... with Windows and Unix OS • Viruses: File Infector and Boot Record Infector, Macro • Tools like CHKDSK and MEM may help locate malicious code • Files in DOS and Unix can be hidden and found using...
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