IOS
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E-Market
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1
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IOS may use private or publicly accessible network.
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E-Market may use publicly accessible network.
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2
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Customer supplier relationship is determined in advance. It is expected that it is ongoing relationship for multiple transaction.
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Two types of relationship (i) Customer to seller linkage is established at time of transaction for one time only. (ii) Customer seller linkage is established for a fixed time period.
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3
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Agreements on nature and format of business document.
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Sellers market maker determine which transaction they will provide.
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4
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Advance arrangements are made so that both parties know which communication network will be used for system
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Customer and seller independently determine which communication network they will use.
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5
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Joint guidelines are formulated so that each party will know how system is used.
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No joint guideline are formulated in advance.
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Topic: Explain different types of storage devices in Computer systems Storage Devices Storage devices are used to store data and instructions permanently. Storage devices are also called secondary storage devices / backing storage devices / external storage devices or auxiliary storage devices. Examples of storage devices include Hard Disk, CD and DVD etc. Why Secondary Storage Devices are Used? Secondary storage devices are used because: Primary memory(RAM) is volatile and temporary. When computer is switched off, all data in ram is erased. Storage devices can store large amounts of data and instructions permanently whereas Primary memory has less capacity of storing data. Types Of Storage Devices There are three main types of storage devices: Magnetic Tape Magnetic Disk Optical Disk Flash Memory storage devices 1. Magnetic Tape Magnetic tape is the oldest storage device. It is made of plastic coated with magnetic material. Data is stored on mag
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