IntroductionThanks to the advent of small, low-cost computers, as well as the rapid advancement of communications technology, computers have enabled management to adapt information technology (IT) to needs of the organization. In the business sector, information provided by computers is increasingly used in decision-making at all levels, but dissatisfaction is often reported by users. To solve the problem, managers use decision support systems (DSS) daily to directly support decisions. Along with artificial intelligence (AI) and expert systems (ES), there is a conflict between the AI ​​approach and the algorithmic approach. In practice, it is difficult to clearly distinguish which approach is best for an organization. A system based on these two approaches adopted by managers depends only on a specific situation. According to the case of the beauty salon, the specific task, assigning staff to provide each treatment within the customer's appointment, will be discussed using these two approaches. The reasons and benefits of using computers in business will also be briefly discussed in the article. Next, we will individually discuss what DSS, ES and algorithmic approach are. Finally, based on these discussions and the specific case study task, some evaluations of the investigation will be provided.1 Using Computers in BusinessBusinesses use computers to track profits and losses, as well as other aspects of the business . Using spreadsheets to manage and analyze numbers has become a mainstay of many businesses. These programs can add rows of numbers, estimate percentages, convert numbers to graphs and charts, and can be converted to slides to give... middle of the paper ......r appointments, the latter can respond more quickly than the use of the previous one.6 References[1] WAFreyenfeld, 1984, DECISION SUPPORT SYSTEMS[2] Leigh, Andrew, 1983, Decisions, decisions! A Practical Guide to Management Problem Solving and Decision Making[3] Hicks, James O, 1990, Information Systems in Business: An Introduction[4] Bocij, Paul, 1999, Business Information Systems: Technology, Development and management[5] Badiru, AB, 1992, Application of expert systems in engineering and manufacturing Websites: http://www.webopedia.com/TERM/D/decision_support_system.html http://searchcio.techtarget.com/sDefinition/ 0,,sid19_gci213888,00.htmlhttp:/ /www.chrisnaylor.co.uk/Definition.htmlhttp://whatis.techtarget.com/definition/0,,sid9_gci212087,00.html