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3-tier architecture

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What translates requests and responses between a client and a server?

middleware


What are the three tiers in a 3 tier?

Client, Middleware, Server


What are the three tiers in a 3-tier architecture?

Client, Middleware, Server


A piece of software called translates requests and responses between a client and a server?

Middleware


What is the role of a network in client-server architecture?

Simple: in order to have a client-server architecture you need a network. The role of the network is to move data packets between the client and the server. In a client-server architecture the server usually has to manage the network (for example, a domain controller in a Windows environment).


What is client server Architecture?

http://wiki.answers.com/Q/What_is_client_server_Architecture"e http://wiki.answers.com/Q/What_is_client_server_Architecture"eClient server architecture refers to a network architecture whereby every computer on the network is either a server or a client.


What type of server would most likely be used first by a network client in a corporate environment?

A DNS server would most likely be used first by a network client in a corporate environment.


How does a middleware work?

Middleware is a software used for integration between multiple applications. Mostly communication data is passed through and from in the form of XML packets. By Ijaz Haider Malik - Pakistan


Explain in detail about the building blocks of client server system?

The client server building blocksThe Client Building BlockRuns the client side of the applicationIt runs on the OS that provides a GUI or an OOUI and that can access distributed services, wherever they may be.The client also runs a component of the Distributed System Management (DSM) element.The Server Building BlockRuns the server side of the applicationThe server application typically runs on top of some shrink-wrapped server software package.The five contending server platforms for creating the next generation of client/server applications are SQL database severs, TP Monitors, groupware servers, Object servers and the Web server.The server side depends on the OS to interface with the middleware building block.The server also runs DSM componentIt may be a simple agent or a shared object database etc.The Middleware Building BlockRuns on both the client and server sides of an applicationThis broken into three categoryTransport StacksNOSService-specific middlewareMiddleware is the nervous system of the client/server infrastructureThis also has the DSM componentDSMRuns on every node in the client/server network.A managing workstation collects information from all its agents on the network and displays it graphically.The managing workstation can also instruct its agents to perform actions on its behalf.Server-to-server MiddlewareServer-to-server interactions are usually client/server in nature - servers are clients to other servers.However, some server-to-server interactions require specialized server middleware. For example, Two-Phase commit protocol may be used to coordinate a transaction that executes on multiple servers.Servers on mail backbone will use special server-to-server middleware for doing store-and-forward type messaging.But most modern software follows the client/server paradigm.The building blocks of client/server applications are:ClientMiddlewareServerThese building blocks can be rearranged to use them in the following situations:1. Client/Server for tiny shops and nomadic tribes - This is a building-block implementation that runs the client, the middleware software, and most of the business services on the same machine. It is the suggested implementation for the one-person shops, home offices, and mobile users with well-endowed laptops.2. Client/Server for small shops and departments - This is the classic Ethernet client/single-server, building block implementation. It is used in small shops, departments, and branch offices. This is the predominant form of client/server today.3. Client/Server for intergalactic enterprises - This is the multiserver building-block implementation of client/server. The servers present a single system image to the client. They can be spread out throughout the enterprise, but they can be made to look like they are part of the local desktop. This implementation meets the initial needs of intergalactic client/server computing.4. Client/Server for a post-scarcity world - This model transforms every machine in the world into both a client and a server. Personal agents on every machine will handle all the negotiations with their peer agents anywhere in the universe. This dream is almost within reach.1) Client/Server for Tiny Shops and Nomadic TribesIt is easy to run the client and server portion of an application on the same machine.Vendors can easily package single-user versions of a client/server application.The business critical client/server application runs on one machine and does some occasional communications with outside servers to exchange data, refresh a database and send or receive mail and faxes. Ex: Internet.2) Client/Server for small shops and departmentsThe client/server architecture is particularly well-suited for the LAN-based single server establishments.It consists of multiple clients talking to a local server.This is the model used in small businesses.The single-server nature of the model tends to keep the middleware simple.The client only needs to look into a configuration file to find its server's name.Security is implemented at the machine level and kept quite simple.The network is usually relatively easy to administer; it's a part-time job for a member of the group.There are no complex interactions between servers, so it is easy to identify failures- they're either on the client or on the local server.3) Client/Server for Intergalactic Enterprises:The client/server enterprise model addresses the needs of establishments with a mix of heterogeneous servers.These models are upwardly scalable.When more processing power is needed for various intergalactic functions, more servers can be added, or the existing server machine can be traded up for the latest generation of superserver machine.The servers can be partitioned based on the function they provide, the resource they control, or the database they own.The servers can be replicated to provide a fault-tolerant service or to boost an application's performance.Multiserver capability, when properly used, can provide an awesome amount of compute power and flexibility, in many cases rivaling that of mainframes.To exploit the full power of multiservers, we need low-cost, high-speed bandwidth and an awesome amount of middleware features -includingnetwork directory servicesnetwork securityremote procedure calls andnetwork time services.Middleware creates a common view of all the services on the network called a single system image.Good software architecture for intergalactic enterprise client/server implementations is all about creating system "ensembles" out of modular building blocks.Intergalactic client/server is the driving force behind middleware standards as distributed objects and the Internet.4) Client/Server for a Post-Scarcity WorldEvery machine is both a client and a full-function server.Because every machine is a full-function server, it will run, at a minimum, a file server, database server, workflow agent, TP Monitor, and Web server - all connected via an ORB.This is in addition to all the client software and middleware.In next few years, a hundred million machines or more may be running almost all the forms of client/server softwareIn this model instead of mobile agents, personal agents will be used.


What is a domain answer?

A domain in an environment where a client - server architecture exists. Its a administrative boundary.


Can you explain the concept of middleware in backend frameworks?

Middleware in backend frameworks is software that sits between the client and the server, processing requests before they reach the main application and handling responses before they go back to the client. It can be used for tasks like logging, authentication, error handling, or modifying requests and responses. In simple terms, middleware acts as a middle layer that helps manage the flow of data in a web app, making it easier to add features or control how data is handled without changing the core application code.


A client server network is also known as?

Pretty much a client server network is known as a client server network.