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The main purpose of this paper is to present an idea of using mobile technology for optimization of orders management inside a restaurant. For implementing this idea we used SQL Server 2008 R2 Express for databases, Visual Studio 2010 Express for Windows Phone for developing the application used from phones, Visual Web Developer 2010 Express for developing web services, Internet Information Server for expose the web services to the internet. The phone application can be deployed to Windows Marketplace, and can be downloaded by any potential user. In this case the application can be used by any client of the restaurant if they will receive a username and a password. The entire process of placing orders can be transferred directly to the client, and can be made with the hardware of the client. More clients means more hardware’s which can be used concurrently.

The existing accommodation in the rural Maramureș region is essential for the development of tourism. Most accommodation units are within the typology of rural tourist hostels, therefore special attention should be paid to promote and diversify their touristic offers. Despite its attractive potential, the rural tourism in Maramureș has its weaknesses because there is no organizational strategy for its deployment. Tour operators must adopt new solutions to promote tourist services, one of which may be using expert systems.The main purpose of this study is to develop a model of an expert system, applying new methodological approaches to the evaluation and ranking of countryside hostels in Maramureș. This model can be easily implemented with private and public entities and could be a source of significant benefits for them. Scientific literature in the field highlights the benefits of using expert systems in all business sectors and reinforces our conviction that they can be applied extensively in tourism as well. The research methodology included: defining the nature and scope of the problem, identifying experts, acquiring knowledge, selecting the system building tools, as well as encoding and evaluating the system. In the knowledge acquisition phase we used interviews, thus obtaining a database with information on countryside hostels in Maramureș. We turned to tourism professionals to establish expert rules in a way that reflects as accurately and completely as possible the context. These rules led to the encoding of the system. In order to encode them, we used the Corvid system, developed by Exsys, which was verified and validated. The system, once designed, provides a user-friendly interface. After being implemented in specialized sites, the system will be able to facilitate searching and finding information by users. We propose that the model obtained will be a starting point for further research, given that the development environment allows the system to be constantly updated. Using the system will enrich the knowledge database by storing user requirements, and the results thus obtained can be used for statistical calculations useful in determining future development strategies.The implementation of the proposed model in websites, through the assistance it provides, can attract customers both from our country and from the top tourism consumer countries of the European Union and around the world.

In case of online applications the cycle of software development varies from the routine. The online environment, the variety of users, the treatability of the mass of information created by them, the reusability and the accessibility from different devices are all factors of these systems complexity. The use of model drive approach brings several advantages that ease up the development process. Working prototypes that simplify client relationship and serve as the base of model tests can be easily made from models describing the system. These systems make possible for the banks clients to make their desired actions from anywhere. The user has the possibility of accessing information or making transactions.

Nowadays, the most systems on the Internet are using databases. These databases are relational and normalized. Although the tables of the relational model itself does not have a behaviour in context object, though the diagrams uses different methods. In this article we focus on the database modeling for a virtual store using UML (Unified Modeling Language).

The e-learning system provides the development of the learning process by organizing and correlating the following: general managerial activities, organizing activities of the learning process, sustaining activities of the learning process. This article c