Databases primarily manage transactions, interaction among two more parties for the conduct of business such as scheduling a patient appoin payment online, or sending patient prescription a pharmacy. Which of the following are correct about database transactions I: should be processed reliably, II: should accommodate users operating at the same time, III: should recover from failures, IV: should be accessible to all users I and II I, II, II, IV 1, II, III 1, II, III, IV

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Q: how to generate and validate ElGamal digital signatures.

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Storage Devices

Storage devices can store digital information/data and applications (in the form of audio, video, image, etc.) to process the result of any computational work. They are a kind of computer hardware that stores information and instruction to be processed. A storage unit is a part of a computer system. Every computer has a storage device. The storage devices work as a memory. They are also known as a storage medium, digital storage, or storage media, which temporarily or permanently store information. They are used either internally or externally in the computer system, server, or any computation device to hold the information. Examples include a pen drive, CD, DVD, floppy disk, memory card and so forth.