'Horizontal fragmentation' diaporamas de présentation

Chapter 22: Distributed Databases

Chapter 22: Distributed Databases. Heterogeneous and Homogeneous Databases Distributed Data Storage Distributed Transactions Commit Protocols Concurrency Control in Distributed Databases Availability Distributed Query Processing Heterogeneous Distributed Databases Directory Systems.

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5. Distributed Database Design

5. Distributed Database Design. Chapter 3 Distributed Database Design. Outline. Introduction Fragmentation ?????? Horizontal fragmentation ?????? Derived horizontal fragmentation ????????? Vertical fragmentation ?????? Allocation ??????. Outline. Introduction Fragmentation ??????

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Chapter 22

Chapter 22. Distributed DBMSs - Concepts and Design Transparencies. Chapter 22 - Objectives. Concepts. Advantages and disadvantages of distributed databases. Functions and architecture for a DDBMS. Distributed database design. Levels of transparency. Comparison criteria for DDBMSs.

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Distributed databases

Distributed databases. Acknowledgements to A. Kemper and Eickler. Distributed Databases. Motivation: Former times: Bank with subsidiaries Nowadays: Virtual organization + Subsidiaries should work on data of local customers + Central site should be able to access all data.

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DISTRIBUTED DATABASE DESIGN

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DISTRIBUTED DATABASE DESIGN

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Distributed DBMSs - Concepts and Design Transparencies

Distributed DBMSs - Concepts and Design Transparencies. Concepts. Distributed Database A logically interrelated collection of shared data (and a description of this data), physically distributed over a computer network. Distributed DBMS

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Distributed Databases

Distributed Databases. ?????? ???? ???????. ?????? ????. A distributed database system consists of loosely coupled sites that share no physical component Database systems that run on each site are independent of each other Transactions may access data at one or more sites.

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Tutorial of Course Project: Distributed Query Engine

Tutorial of Course Project: Distributed Query Engine. Jun Wang( ?? ) East Main Building 9-216 18901291504 wjun09@mails.tsinghua.edu.cn. Outline. Requirements Benchmark Discussion of Design & Implementation Demo Assignment Q&A. Outline. Requirements Benchmark

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Tutorial 2: Distributed Query Processing

Tutorial 2: Distributed Query Processing. INFS 3200/7907 Advanced Database Systems Semester 1, 2007. Overview. Distributed query processing How does DDBMS process a query? Semi-join Distributed database design Derived horizontal fragmentation. Questions.

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Tutorial 2: Distributed Query Processing

Tutorial 2: Distributed Query Processing. INFS 3200/7907 Advanced Database Systems Semester 1, 2007. Overview. Distributed query processing How does DDBMS process a query? Semi-join Distributed database design Derived horizontal fragmentation. Questions.

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Distributed systems and Distributed databases design

Distributed systems and Distributed databases design. Enterprise systems DT211 4. A distributed system is a collection of computers that communicate by means of some networked media. There are a number of key issues which must be considered when discussing distributed system architectures:

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Why not use Federated approach for Database Management System (DBMS)?

Why not use Federated approach for Database Management System (DBMS)?. Yan Cui ITK478 Position paper. crucial issues in enterprises.

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Why not use Federated approach for Database Management System (DBMS)?

Why not use Federated approach for Database Management System (DBMS)?. Yan Cui ITK478 Position paper. crucial issues in enterprises.

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Distributed databases

Distributed databases. A brief introduction (Figure numbers may not be the same as in the book). Distributed database concepts. Distributed database (DDB) Collection of multiple logically interrelated databases distributed over a computer network

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Distributed Database Management Systems

Distributed Database Management Systems . Lecture 13. How. Interests of the local and head offices mar result following vertical partitions of this table: EMP1(eId, eName, eDept) EMP2(eId, eQual, eSal). 1- Vertical; Different subsets of attributes are stored at different places, like,

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DISTRIBUTED DATABASES IN ADBMS Shilpa Seth

DISTRIBUTED DATABASES IN ADBMS Shilpa Seth. To BeDiscussed . Distributed Database System Advantages Data Fragmentation, Replication, Allocation Types of Distributed System. Distributed Database System.

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