安卓手機應用程序設(shè)計畢業(yè)論文-資料下載頁

　　

【正文】 , represents the distance education with the flexibility of educational software and process covering synthesis of different technologies (Yapicioglu, 2001). Increasing internet using rate and developments in the infrastructure of today’s internet have caused many improvements in webbased software and services. As a result of these improvements, education activities have begun to be performed by using the internet and network technology. Many technological tools like electronic books, electronic mails and conference environments have also taken active parts in these kinds of education activities. Due to increasing rate in using these tools and related education methods, a special education system has appeared. The whole education system is called as “Webbased Distance Education System” (WBDES). Today, distance education systems are established in many universities and educationteaching activities are performed via these systems. One of the big reasons in increasing using rate of Webbased Distance Education is requirements to these kinds of systems in parallel with developments in the information technology. One of the most important advantages of WBDES is being able to provide asynchronous education within a virtual education environment. In a WBDES, students can easily access to the educational contents, which was transferred by educators to the system and take advantage of these sources by using different educational tools. Because of its advantages on costs, WBDES is also preferred to be used rather than other models or systems (Carswell and Venkatesh, 2002). Today, the most important reason in increasing the number of WBDES and to be accepted by students is their independent working mechanism from time and location (Bullen, 2006). It has TOJET: The Turkish Online Journal of Educational Technology – October 2011, volume 10 Issue 4 Copyright ? The Turkish Online Journal of Educational Technology 108been an important preference reason for the people who suffer shortage of time and can not take active part in the location where education activities are performed. Generally, Webbased Distance Education Systems are called as Learning Management Systems (LMS). Factors and methods, which are considered in designing LMS, have been examined in the literature from various perspectives (French, 1999。 Harris, 1999。 Joliffe, 2001). When they are evaluated in terms of cost, it is seen that the cost of WBDES is approximately half of a typical traditional and formal education cost. On the other hand, interactive education feature of WBDES and uptodate content presenting function should also be considered (Balbieris and Reklaitis, 2003). In this study, a database model, which was designed and developed to be used for Learning Management Systems, is described. The database model was developed in a relational structure and designed to be suitable for LMS, which are in pliance with SCORM standards. Additionally, the developed model has a portable, easily accessible and easytomanage structure and can be used in longterm studies. With this database model, a virtual education institute can be established and published via required interface structures. In the related Learning Management System, a faculty or institute can be defined and all academic and administrative processes of these institutes can be managed with the help of developed database model. SCORM Standards SCORM is a Content Management System Standard and can be defined as “Shareable Content Object Reference Model”. SCORM includes a framework for running lesson contents. SCORM standards are interested in publishing rather than teachable features of the lesson content (Su, 2006。 Him, 2005). While explaining the content management aspects of distance education systems, SCORM standards must also be examined in every respect. While applying SCORM standards, some factors, which belong to SCOM standards, must be stated. These factors are。 1. Interoperability: Merging contents from different sources for interaction and to be able to run in different systems and municate with other systems. 2. Reusability: The situation that defines reusability for information and objects, which consist of elearning content (script, graphic, sound, animation, video, code…etc.) and turning into a different education object, which includes all of these objects. 3. Manageability: Monitoring the information, which belongs to the user or content management system. 4. Accessibility: To be able to access a learning object at any time. 5. Durability: A technological development, which describes generating new versions for the tools requiring redesign and coding. 6. Scalability: Being able to change according to quantity of users, number of the technology, number of courses or content. If SCORM standards are taken into consideration, the developed system or model can be used for a long time and updated easily. System or model contents can also be accessed easily from any location. Relational Database Model for a Learning Management System Database design is a detailed study, which must be overviewed plenty of times in the period of analyzing performance. Tables and properties of these tables must be examined in any module structure during the analyzing and designing process. Because of some processes like information filtering or information access, the database model should have an integrated structure. In every phase of the analyzing process, features and functions of a typical relational database must also be considered. Moreover, handicaps appeared by relation scenarios can jeopardize information integrity and also information security. So, these factors must also be considered. Database structure of a typical distance education system presents a relational and plex structure. Different user types, authorization features and behavior rules also requires a relational database model. For instance, if a new user is added to the system, t