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Computer Software - 3028 Words

Computer software can be divided into two main categories: application software and system software. Application Software: Application Software includes programs that do real work for user. Example: Payroll systems, Inventory Control, Manage student database, Word Processor, Spreadsheet and Database Management System etc. Application software consists of the programs for performing tasks particular to the machines utilization. Examples of application software include spreadsheets, database systems, desktop publishing systems, program development software, and games. Application software is generally what we think of when someone speaks of computer programs. This software is designed to solve a particular problem for users. System†¦show more content†¦The information handled and manipulated by the other layers of an n-tier system is basically stored in a structured manner in a database. Take an example of any organization. How do you think they store their employee and customer information? Yes, they store it in a database. Imagine a website and where do you think the site maintains the login information about its users? The answer is again, a database. A relational database contains tables which are linked together. Each table contains records which contain fields. A query can filter your records to show just the ones that meet certain criteria or to arrange them in a particular order. [pic] Relational Databases - An Introduction One of the most popularly used database models is the relational model. It was developed by Edgar Codd in 1969. This model provides a declarative method for specification of data and queries. In a relational model of a database, the database users directly state the information they want to be retrieved from it and abstract away from the responsibility of describing the data structures that are used to store data. A database that confirms to the relational database model is known as a relational database. A relational database is a collection of relations or tables. The rows of a table in a relational database are known as tuples and each column of a table is called an attribute. By definition, a relation becomes a set of tuples having the same attributes. Operations,Show MoreRelatedAbc Computer Sales And Software1830 Words   |  8 PagesABC Computer Sales and Software, LLC. ABC Computer Sales and Software, LLC. Is a $4 billion firm with sales primarily in innovative computer and software sales for both consumers and small businesses. The computer sales firm was created in the early 1990s and has grown exponentially over the decades. As ABC Computer Sales and Software, LLC. has distinctly increased its revenue and has had consistent growth over the years. 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Chronic Diseases Essay Sample free essay sample

Chronic Obstructive Pulmonary Disease ( COPD ) is a chronic disease that overtime deprives an person of the ability to take a breath. It is presently the 4th taking cause of decease worldwide. COPD is preventable. there are ways to name this disease. and there is intervention. Tobacco smoke contributes to more than 90 % of COPD diagnosing worldwide. and the other 10 % is chiefly made up of genetic sciences. environment or occupational causes. Those who smoke frequently either disregard or make non understand the early marks of this disease. Early marks would include coughing. mucous secretion. uncluttering the pharynx. and wheezing. Most tobacco users accept this as a consequence of smoke and do non accept these are early marks of COPD. The marks of lasting harm from this chronic disease are chronic obstructor to the air passages and lung harm. Another indicant this disease has taken over. is aggravation ( Doherty. 2002 ) . The procedure to name this disease is frequently hard. We will write a custom essay sample on Chronic Diseases Essay Sample or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page as the early marks remain mostly undetectable through a chest radiogram or EKG. Once more lasting harm has taken topographic point inside the lung it is easier to name COPD by x-ray. Often patients are diagnosed in the latter phases. when they see a physician to kick about take a breathing trouble and other related symptoms. However. there are ways to observe COPD in the early phases. known as the ‘silent period’ . by utilizing a spirometry trial. The spirometry trial measures the abnormalcies of airflow and gives the single consequences to find a diagnosing during the early phases of COPD. It is recommended patients 45 and older with a history of smoking have a spirometry trial to observe the early phases of COPD. As good. as those under this age demand and have a life style of smoke. Treatment for COPD would include pharmaceuticals and non-pharmaceuticals. The redness caused by this disease typically does non react to corticosteroid interventions. as in the instance of asthma. In 10 % to 20 % of those diagnosed with this chronic disease. an inhalant is helpful. but for merely those in the latter phases. Steroid inhalents conveying merely impermanent alleviation. Change by reversaling the conditions of COPD would necessitate aggressive interventions in the early phases. when intervention is more effectual ( Doherty. 2002 ) . To forestall COPD. one must discontinue smoke or drastically cut back their coffin nail usage. Those who have smoked and quit may still neer gain back their healthy lung map once the disease has set in. Yet it is possible after one stops smoking to see an betterment and can decelerate the rates of diminution. To assistance in the bar of COPD. a healthy run to assist carry people non to get down a coffin nail dependence would be best. For those. who are addicted. helpful resources to promote quitting should be more available in ad runs from the medical community. Safer options and AIDSs to discontinue are nicotine gum. herbal intervention. hypnotherapy. and traveling cold Meleagris gallopavo. If one is enduring from COPD or related to a household member or friend who is. there are support groups online. through forums. or fitting ups. Three believable beginnings for aid and back up covering with COPD are www. lung. org. World Wide Web. copd-international. com. and World Wide Web. copdfoundation. org. Chronic diseases are preventable. and to forestall harm to lungs and air passages. in the instance of COPD. halt smoke or make non get down. To name this disease. an in office spirometry trial can govern out the early phases. Treatment for COPD is hard. particularly in the instance of change by reversaling it. Practicing a healthy life style will assist help one from the hazard of this chronic disease. Mentions NewsRx ( 2003. December ) . Global Initiative for COPD ; international experts hope moreattending goes to lung disease. . Biotech Week. ( 169 ) .Doherty. D. ( 2002 ) . Early sensing and direction of COPD ; what you can make to cut down the impact of this disenabling disease. . Postgraduate Medicine. 111 ( 6 ) .