Peer-to-Peer Systems




Peer-to-Peer



An alternative to the client/server model of distributed computing is the peer-to-peer model.
Client/server is inherently hierarchical, with resources centralized on a limited number of servers.
In peer-to-peer networks, both resources and control are widely distributed among nodes that are theoretically equals. (A node with more information, better information, or more power may be “more equal, ....etc

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Aphrodite Tsalgatidou
University of Athens,
Department of Informatics

Contents
Organisational and Information Systems
Approaches to Information Systems Development
A Framework for Systems Analysis and Development
Problem Analysis
Process Analysis
Conceptual Data Modelling
System Design (Process, Data and U.I. Design)

Organisational Systems
System: A collection of interrelated parts which act as a whole towards a common goal
Externally, systems have boundaries and int ....etc

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Peer-to-peer computing consists of an open-ended network of distributed computational peers, where each peer shares data and services with a set of other peers, called its acquaintances. The peer-to-peer paradigm was initially popularized by file-sharing systems such as Napster and Gnutella, but its basic ideas and principles have now found their way into more critical and complex data-sharing applications like those for electronic medical records and scientific data. In such environments, data sharing poses new challenges mainly due to the lac ....etc

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Spatial Data Query Support in Peer-to-Peer Systems



Motivation


Spatial data sets are used for many applications, e.g., GIS, CAD, …
P2P systems provide a distributed platform that is very scalable.
Pros:
Scalability, no central point of failure
Cons:
Very dynamic (unreliable), topology maintenance required


Distributed Hash Tables (DHT)


DHT systems: Content Addressable Network (CAN), Chord, Pastry, etc.
Using DHT to allocate large da ....etc

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Peer-to-peer computing consists of an open-ended network of distributed computational peers, where each peer shares data and services with a set of other peers, called its acquaintances. The peer-to-peer paradigm was initially popularized by file-sharing systems such as Napster and Gnutella, but its basic ideas and principles have now found their way into more critical and complex data-sharing applications like those for electronic medical records and scientific data. In such environments, data sharing poses new challenges mainly due to the lac ....etc

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Hi
I am looking for E-R diagrams and Class Diagram of the project named Constrained Skyline Query Processing against Distributed Data Sites. Please help me out in this by providing the information as early as possible.
Thanking you. ....etc

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EVOLUTION OF PEER TO PEER DOWNLOADING
PEER TO PEER NETWORK
What is a peer to peer network?
A peer to peer network is a network that relies on the computing power & bandwidth of the participants on the network.
P2p networks are typically used for connecting nodes via largely ad_hoc connections.
Such networks are useful for sharing content files containing audio,video ,data & anything in digital format.



File Download / TransferTraditional Client-Server Downloading

Peer to peer file sharing


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This article is presented by: Bin Cui, Senior Member, IEEE, Lijiang Chen, Student Member, IEEE, Linhao Xu,
Hua Lu, Member, IEEE, Guojie Song, and Quanqing Xu



ABSTRACT


PEER-TO-PEER (P2P) computing systems have been thought of as a powerful paradigm for data sharing, and peerbased data management has attracted increasing interest from the database and information retrieval communities recently. Due to its desirab ....etc

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Rumor Riding: Anonymizing Unstructured Peer-to-Peer Systems JAVA

ABSTRACT
Although anonymizing Peer-to-Peer (P2P) systems often incurs extra traffic costs, many systems try to mask the
identities of their users for privacy considerations. Existing anonymity approaches are mainly path-based: peers
have to pre-construct an anonymous path before transmission. The overhead of maintaining and updating such
paths is significantly high. We propose Rumor Riding (RR), a lightweight and non-path-based mutual anonymity
protocol for ....etc

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Randomized Protocols for Duplicate Elimination in Peer-to-Peer Storage Systems




INTRODUCTION

PEER-TO-PEER systems have emerged as cost-effective alternatives
for scalable data sharing, backup, and archival
storage , . Peers contribute data and storage and, in
return, gain access to data at other peers. Effective storage
management is an important issue in the deployment of such
systems. Data replication and caching are key enabling
techniques ....etc

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