Copyright © 2018 Dahlan Abdullah et al. This is an open access article distributed under the Creative Commons Attribution License, which per- mits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. International Journal of Engineering & Technology, 7 (2.5) (2018) 88-91 International Journal of Engineering & Technology Website: www.sciencepubco.com/index.php/IJET Research Paper Fuzzy Model Tahani as Decision Support System for Employee Promotion Dahlan Abdullah 1 *, Hardianto Djanggih 2 , S Suendri 3 , Hendra Cipta 4 , N Nofriadi 5 1 Department of Informatics, Universitas Malikussaleh, Aceh, Indonesia 2 Department of Law, Universitas Tompotika Luwuk Banggai, Luwuk Banggai, Indonesia 3 Department of Information System, Universitas Islam Negeri Sumatera Utara, Medan, Indonesia 4 Department of Mathematics, Universitas Islam Negeri Sumatera Utara, Medan, Indonesia 5 Department of Computer System, Sekolah Tinggi Manajemen dan Informatika Komputer Royal, Kisaran, Indonesia *Corresponding author E-mail: dahlan@unimal.ac.id Abstract Human resources within organization is very important to support the progress and quality of companies in achieving goals. Increased position is a very important factor for employee career planning and also to rejuvenate a position of occupation to be occupied by some- one who has appropriate criteria to occupy a proposed position based on objective assessment and appropriate criteria variables. For that required a system that can assist leaders in making decisions for promotion of positions in accordance with what is expected from the company, it is necessary to design a decision support system using fuzzy database model Tahani method to assist in promotion. Keywords: Human Resource, Fuzzy,Tahani, Tahani Model 1. Introduction Human resources is very important thing to support the progress and quality of the organization to achieve the goal [1]–[4]. Promo- tion is an achievement that is expected for employees within an organization based on the criteria that have been determined by top management. The promotion process of promotion and career planning is generally based on certain factors, such as education level and working period, but there are many other factors to as- sess a person for promotion of positions such as discipline, dili- gence and accuracy or expertise owned by an employee [5], [6] These factors can be managed by a system that can be helpful for the decision maker[7]–[9] Data processing using human labor is very vulnerable error[10]–[13], it can be happen because human capabilities are very limited. Reducing errors that may occur is very appropriate when using the computer[14] as a tool in data processing and presents the information necessary for various purposes[10], [15]–[18].Promotion in XYZ organization is still manual and requires implementation of information technology for data processing because an organization will be able to move quickly if the information obtained is also fast and accurate espe- cially in making decisions [2], [19]–[27] Decision Support System (DSS) is one way that can be used for top management get rec- ommendation promotion based on certain criteria, DSS with Fuzzy Tahani model method can help top management in making decision because this method is derived from artificial intelligence that do processing with factor certainty and uncertainty[8], [14], [28]–[31]. Fuzzy[30] database system is one of Fuzzy method that uses standard database. In standard databases, data are classified according to how the data is perceived by the user. Therefore in the standard data database is displayed will come out like the data has been stored. But in fact, if this happens, then should be used Fuzzy database system. Fuzzy database used here is the Tahani Fuzzy database system. This Tahani model still uses the standard relation, only this model uses Fuzzy set theory to get information. 2. Methodology Decision is the activity of choosing a strategy or action in solving the problem[32]. The act of choosing a strategy or action that the manager believes will provide the best solution to something is called decision making. There are four phases in the decision mak- ing process[33], [34]: a. Search (intelligence) This stage is the process of searching and detection of the scope of problematic and the introduction of problems. b. Design (design) This stage is the process of discovering, developing, and analyzing alternatives that can be done. This stage is a process to understand the problem, find solutions and test the feasibility of the solution. c. Choice (choice) Selected among possible action alternatives, in this phase can be combined with search or matching algorithms such as KMP, Boy- er-Moore, BFS and DFS[35]–[40]. The election results are then implemented in the decision-making process. d. Implementation (implementation) This stage is actually part of the election stage, this stage is the implementation of the decision taken.