In High-Level Architecture, federates are integrated into a federation in single Run-Time Infrastructure middleware, which handles High-Level Architecture services for interoperation. The interoperation of federations is required in order to combine systems simulated in existing federations. Unlike a single federation, the interoperation of federations provides the data security and makes it po...

We provide a short survey on the terminology of database security in database federations and give, as the main task, a taxonomy of the major design choices concerning access control in database federations. The taxonomy is organized in the categories granularity, authorization, and access control. Additionally, the impact of distribution, heterogeneity and autonomy, three characteristics of da...

The integration of isolated XML repositories has drawn more and more interest recently. In this paper, we propose XML federations to provide global e-services while preserving the necessary autonomy and security of each individual repository. First we show a logical architecture of XML federations, which is adapted from the common architecture of traditional federated databases according to the...

the aim of this research was to explain the difference in the dimensions of learning organization between federations of team and individual sports. this research was a comparative survey. the statistical population consisted of 795 fulltime employees of iran sport federations. out of 212 returned questionnaires, 158 questioners were from individual sport federations and 54 from team sport fede...

the present study aimed to examine the relationship between information technology and knowledge management in sports federations. the research method was correlation and survey. the statistical population included all sport federations and the sample consisted of 12 federations (7 individual federations and 5 team federations). out of 378 employees from the selected sport federations, 191 empl...

the purpose of this study was to compare the pathological components of organizational performance in successful and unsuccessful sports federations. the research method was comparative study in which data was collected by field study method. the sample size was equated with the population which consisted of 127 employees of successful federations including wrestling, rowing and water skiing, w...

The ever-changing data requirements of today’s dynamic businesses are not handled well by current OnLine Analytical Processing (OLAP) systems. Physical integration of unexpected data into OLAP systems is a long and time-consuming process, making logical integration, or federation, the better choice in many cases. The increasing use of XML, e.g. in business-to-business (B2B) applications, sugges...