Database Systems Concepts Essay Example | Topics and Well Written Essays - 750 words - 1

Database Systems Concepts - Essay ExampleAn operating system should submit for two things It should manage input and output devices, and it should control, supervise and em fountain (which each have separate sub-goals and atomic number 18 sometimes in conflict) engagementrs as healthy as administrators and people connected on the network to use the fleshyw be to channel software. Efficiency helps these goals because it reduces lag in input and output and because it reduces the viewgraph of the OS and then allowing people to guide on more programs and run them with less slowdown and issues. However, it is unquestionable that DOS would be farthermost more efficient than Windows 7. Assume for a moment that a DOS-like text-only input with no or few visual input systems could run all(prenominal) element of modern software. Most consumers would still prefer not to spend their time mucking about in command prompts unless its absolutely necessary. Similarly, Linux users often get better machine-specific functionality by compiling their own kernel, but for most users, good enough is better because an OS like Windows designed to run on the lowest common denominator takes more of their time. Very few people like to beat with computers They want to quickly install the OS and get to work on what theyre doing. Their time is valuable all to them or to their organization, and so its actually inefficient to waste their time with OS efficiency. User affection is one of the keys to the success of Macintosh. Many experienced PS users smart at Macs because they feel that they are being too constrained, but they are often lifetime computer users. Many people dont have the reputation or interest. Efficiency in the form of less graphical displays and overhead is wasteful for these customers because that overhead gives them a better, more pleasurable and more efficient experience. Power consumption is another area where OS overhead could be acceptable. Controlling for power does cost computational time, but it also saves customers money. On laptops in particular, having power management tools, which are an additional process running and thus introduce inefficiencies and bloat as well as risks of system failure in terms of power consumption software errors, are worthy it because they allow users more time with their laptops. Allocational tools tail also introduce temporary overhead, but if customers are intending to run dozens of programs, as most are, having smart allocation is an investment that pays off. In fact, many OS tools are basically investments with short-term inefficiencies that lead to long-term computational efficiency. Drivers with video cards, for example, clearly cost some compass point of computational time and lead to bloat (and anyone who has struggled with failing drivers or Direct X compatibility issues knows that errors in these arenas can be catastrophic), but they allow the usage of additional RAM devoted to graphical e lements which is necessary to run most modern games or modeling software. One of the more controversial elements of system overhead is security. In essence, many OS designs dont trust their end user to be safe. Firewalls with highly restrictive settings, anti-viruses that are hard to get rid of, built in anti-spyware, permissions management systems... these improve security, with some risk of exploitation (since every security measure can also be a security loophole), for the lowest common denominator user with little skill