In computer networking and databases, the three-phase commit protocol (3PC)[1] is a distributed algorithm which lets all nodes in adistributed system agree to commit a transaction. Unlike the two-phase commit protocol (2PC) however, 3PC is non-blocking. Specifically, 3PC places an upper bound on the amount of time required before a transaction either commits or aborts. This property ensures that if a given transaction is attempting to commit via 3PC and holds some resource locks, it will release the locks after the timeout.
3PC was originally described by Dale Skeen and Michael Stonebraker in their paper, "A Formal Model of Crash Recovery in a Distributed System"[1]. In that work, they modeled 2PC as a system of non-deterministic finite state automata and proved that it is not resilient to a random single site failure. The basic observation is that in 2PC, while one site is in the "prepared to commit" state, the other may be in either the "commit" or the "abort" state. From this analysis, they developed 3PC to avoid such states and it is thus resilient to such failures.
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A closed system does not allow for energy or matter to enter or leave the system.
See the question "What is QPSK". If you want the difference between QPSK and some other modulation system, you'll need to name the other one.
planter produce indigo in india in india and also controlled.
The difference between distributed system and multiprocessor system is whether the processing units in the system share the main memory. If yes, then the system is multiprocessor system; otherwise, it's a distributed system.
In centralised tasks are done by one system and in distributed tasks are shared by the many computers
there is no proper knowledge regarding this question.
SCADA will perform supervisory action over Distributed control system to make sure that every thing is working fine.
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On a computer network, operating systems communicate with each other. In a distributed operating system, a single OS is communicating with itself across multiple machines.
Web services are a type of communication protocol that allows different applications to communicate over a network using standard web technologies like HTTP, XML, and SOAP. A distributed object system, on the other hand, is a system that enables objects to communicate and interact with each other across a network, often using specific middleware such as CORBA or DCOM. While both aim to facilitate communication between distributed systems, web services are more platform-independent and use standard web protocols, while distributed object systems are often tied to specific middleware technologies.
A distributed computing system requires each machine attached to the network to has specific software allowing them to talk to each other. A distributed virtual systems allows the machines on a network to talk to each other without the use of central software.
A clustered system is a group of interconnected computers working together as a single system to provide high availability and scalability, while a distributed system is a collection of independent computers that appear to users as a single coherent system, typically spread across multiple locations. In a clustered system, nodes are usually physically close to each other and tightly connected, while in a distributed system, nodes can be geographically dispersed and connected through a network.
difference between farming system and cropping system
the difference can be stated like : in parallel systems we have -more than one cpu -one memory -execution is simultaneous in distributed systems,we have -any number on memories -any number of cpu -each process has its own memory
the difference between end user system and organisational system