the management of unstructured data is recognized as one of the major unsolved problems in the information technology (IT) industry, the main reason being that the tools and techniques that have proved so successful transforming structured data into business intelligence and actionable information simply don't work when it comes to unstructured data. This unstructured data is often stored outside the database, separate from its structured data. This separation can cause data management complexities. Or, if the data is associated with structured storage, the file streaming capabilities and performance can be limited. User data is produced and generated on big scale where measurement is hundreds of MB or even couple of GB per user per day. Efficient method for storing and accessing those kinds of data is imperative in modern information society. In this paper we are presenting results of research on using different data types for storing unstructured data within database and classic file system. Research is inspired with current situation in modern information society.

Contemporary information systems such as: eLearning, eUnivesity, eVoting, eHealth, etc., are frequently used and misused for irregular data changes (data tampering). Those facts force us to reconsider our security measures and find a way to improve them. Proving a computer crime act require very complicated processes which are based on digital evidence collecting, forensic analysis and investigation process. Forensic analysis of database systems is very specific and demanding task and therefore presents main inspiration for our research. In this paper we present the fact that classical methods of collecting digital evidence are not appropriate and efficient. In order to improve efficiency we propose combination of well know technology independent methods from database world and their application in field of forensic science. Also we are proposed some new research direction in this area.

The number and size of different kinds of electronic files (text, pictures and videos) incorporated into eLearning environments were dramatically increased during the last ten years and this triggered a development of new web based systems for that specific environment. These systems were developed to satisfy current and specific users' needs which lead to appearance of very heterogeneous environments without interoperability of their services. eLearning system security management, privacy and access control are currently attracting very much attention due to the latest trends in education systems development and attempts to create an electronic file of a student in order to enable the mobility of studying. Access control should prevent unauthorized access to shared resources. Meeting such a requirement in eLearning systems is very complex since it is necessary to protect the content, services and personal data not only from the external users of a system, but also from the development and administrative internal users of a system. Solution for the above mentioned problems can be found in application of the „Hippocratic Databases – HDB concept". The idea is inspired by the basic principles of Hippocratic Oath to be applied on the databases in order to provide data privacy and confidentiality to be one of the most important elements in information system design. Implementation and advantages of this concept have been researched for the needs of business intelligence systems and health information systems, but not of eLearning systems.This paper considers possibilities for development and implementation of HDB in eLearning systems and its sections (LMS- Learning Management System and CMS-Content Management System) by applying W3C (The World Wide Web Consortium) requirements and standards. HDB model structure and specific features for the needs of a specific eLearning environment are presented in the paper.

E-learning has become an important tool which allows flexibility and quality requested by contemporary learning processes at universities. In order to ensure efficient support to e-learning, universities need to provide media-rich, online environments that allow students to interact in highly collaborative environments, gain access to course materials, adaptive knowledge evaluation etc. By focusing on creation of more efficient and adaptable e-learning environments, other processes that occur at University level have been postponed. Many of these processes present the main obstacle which obstructs educators to be fully involved in educational procedures. Therefore, in this paper we present the model of an integrated system for supporting process at university level.