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Since this appears to be homework again, perhaps you should look it up in Wikipedia first. &nbsp;It's there in several ways to answer your questions.
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Since this appears to be homework again, perhaps you should look it up in Wikipedia first.  It's there in several ways to answer your questions.

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Sorry DaveBaldwin. You are right. <br />
<br />
Thanks all!
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Sorry DaveBaldwin. You are right.

Thanks all!

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Can somebody please shed some light on mainframes.<br />
<br />
What is its primary purpose?<br />
How big is the machine? And why is it big? Is it because it has a bigger processor, bigger hard drive etc?<br />
What kind of OS is used on it?<br />
How much does it cost?<br />
What kind of Databases can be used with MainFrames? Oracle or Sql Server?<br />
<br />
Thanks!
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Can somebody please shed some light on mainframes.

What is its primary purpose?
How big is the machine? And why is it big? Is it because it has a bigger processor, bigger hard drive etc?
What kind of OS is used on it?
How much does it cost?
What kind of Databases can be used with MainFrames? Oracle or Sql Server?

Thanks!

What are Mainframes?

A mainframe operating system is networking software infrastructure that allows a mainframe computer to run programs, connect linked machines, and process complex numerical and data-driven tasks. Modern mainframe design is generally defined by redundant internal engineering, extensive input-output facilities, strict backward compatibility with older software, high hardware and computational utilization rates and high stability and reliability. Well-known operating systems include IBM z/OS, z/VM, zTPF, z/VSE, OS/390, and their predecessors, along with MCP for Unisys ClearPath, and NonStop OS/Guardian on HP/Tandem, and questions regarding the IBM midrange operating system called IBM i, OS/400, and i5/OS.

Mainframe OS

Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.

Hardware

A server is a computer program or a machine that waits for requests from other machines or software (clients) and responds to them. This architecture is called the client–server model. The clients may run on the same computer or may connect to the server over a network. The purpose of a server is to share data or hardware and software resources among clients. Typical computing servers are database servers, file servers, mail servers, print servers, web servers, game servers, and application servers.