Universiẗat, Habil.-Schr.--Gießen, 2001.

Jena, Universiẗat, Diss., 1995.

Techn. Universiẗat, Diss., 2003--Freiberg.

Zielstellung der Dissertation ist der Entwurf eines industriellen Datenbanksystems (DBS). Industriell eingesetzte DBS benötigen im Wesentlichen nur zwei Eigenschaften, welche durch herkömmliche DBS nur unzureichend unterstützt werden. Dazu zählen die Realzeitfähigkeit und die Dauerbetriebsfähigkeit. Zentrales Kernelement der vorliegenden Arbeit sind die Betrachtungen zur Realzeitfähigkeit des DBS. Unter bestimmten Voraussetzungen ist es möglich, ein hart realzeitfähiges DBS (RZ-DBS) zu implementieren. Dafür müssen außer dem Realzeitmanager keine grundsätzlich neuen Algorithmen implementiert werden. Einige Algorithmen des DBMS müssen lediglich an die Realzeitbedingungen angepasst bzw. dafür optimiert werden. Da sich Datenbestände dynamisch entwickeln, ist es notwendig, alle Realzeitanforderungen und -bedingungen im DBS zu speichern. Dazu bietet sich das Data Dictionary an. Das RZ-DBS ist, sofern es vollständig implementiert ist, selbstständig in der Lage, die Einhaltung der Realzeitanforderungen zu gewährleisten. Das DBS wurde teilweise in der Industrie erprobt.

Zielstellung der Dissertation ist der Entwurf eines industriellen Datenbanksystems (DBS). Industriell eingesetzte DBS benötigen im Wesentlichen nur zwei Eigenschaften, welche durch herkömmliche DBS nur unzureichend unterstützt werden. Dazu zählen die Realzeitfähigkeit und die Dauerbetriebsfähigkeit. Zentrales Kernelement der vorliegenden Arbeit sind die Betrachtungen zur Realzeitfähigkeit des DBS. Unter bestimmten Voraussetzungen ist es möglich, ein hart realzeitfähiges DBS (RZ-DBS) zu implementieren. Dafür müssen außer dem Realzeitmanager keine grundsätzlich neuen Algorithmen implementiert werden. Einige Algorithmen des DBMS müssen lediglich an die Realzeitbedingungen angepasst bzw. dafür optimiert werden. Da sich Datenbestände dynamisch entwickeln, ist es notwendig, alle Realzeitanforderungen und -bedingungen im DBS zu speichern. Dazu bietet sich das Data Dictionary an. Das RZ-DBS ist, sofern es vollständig implementiert ist, selbstständig in der Lage, die Einhaltung der Realzeitanforderungen zu gewährleisten. Das DBS wurde teilweise in der Industrie erprobt.

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Approved for public release, distribution is unlimited / Test and evaluation of system performance has been a critical part of the acceptance of combat weapon systems for the Department of Defense. As combat weapon systems have become more complex, evaluation of system performance has relied more heavily on recorded test data. As part of the on-going transformation of the Defense department, Commercial-Off- The-Shelf (COTS) technology is being integrated into the acquisition of combat weapon systems. An Analysis Control Board (ACB) was created in response to these factors to support the AEGIS Weapon System Program Office. The focus of this ACB was to investigate and provide potential solutions to Data Dictionary, Data Recording and Data Reduction (R2D2) issues to the AEGIS Program Manager. This thesis discusses the history of the R2D2 ACB and its past, present and future directions. Additionally, this thesis examines how the R2D2 ACB concept could be applied to the DD(X) Next Generation Destroyer program. / Civilian, United States Navy

Submitted by Alisson Mota (alisson.davidbeckam@gmail.com) on 2015-06-25T20:02:38Z No. of bitstreams: 1 Dissertação - Ellen Conceição de Moraes Derzi.pdf: 18313050 bytes, checksum: 57191bdc5e4b2f3f9fad70f95a03265a (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-29T19:44:33Z (GMT) No. of bitstreams: 1 Dissertação - Ellen Conceição de Moraes Derzi.pdf: 18313050 bytes, checksum: 57191bdc5e4b2f3f9fad70f95a03265a (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-29T19:50:22Z (GMT) No. of bitstreams: 1 Dissertação - Ellen Conceição de Moraes Derzi.pdf: 18313050 bytes, checksum: 57191bdc5e4b2f3f9fad70f95a03265a (MD5) / Made available in DSpace on 2015-06-29T19:50:22Z (GMT). No. of bitstreams: 1 Dissertação - Ellen Conceição de Moraes Derzi.pdf: 18313050 bytes, checksum: 57191bdc5e4b2f3f9fad70f95a03265a (MD5) Previous issue date: 2011-11-21 / Não Informada / This paper has developed a tool whose operation is performed based on data from a document management system, designed with the purpose of tracking, recording, control and retrieve information and documents within the General Secretariat of the Councils of the Federal University of Amazonas. Finished with the evaluation of the search tool, the Data Dictionary, which integrates with document management system, identified as SGD / SECONS. The theoretical framework is based on the literature on information systems, knowledge management, document information technology to optimize dynamic support for the activities developed there. Was employed as instruments of direct observation of activities in the sector, meetings with the employees effected and documentary research in primary and secondary documents existing in the Secretariat of the Councils of the UFAM, some produced there, and others received in the industry searched for treatment and transformation into products that are used for the purpose of demarcating the legal functioning of the institution, trainers of domestic legislation. Production information require storage, location and safe recovery and agile in order to provide legal support to managers in decision making and the university community in general. For the mapping and recording system requirements were identified, considering the experiences of internal servers that contributed to the construction of the model developed tool to search and capture of information. The system was evaluated at four different times with different complexities, and the results stated and proved its effectiveness and efficiency, ensuring timely and reliable answers to managers UFAM, besides the possibility of replication of the system and the tool in other sectors function similar to the SECONS, such as the Chambers of the Dean, Academic departments and other units. The results after evaluations confirmed the success of the tool as well as the manual model adopted to manage information and processes. It was suggested the future possibility of increasing the system by automating it, offering the customer, plus the ability to track the processing of a process that is of interest for trial in the Councils, the supply of legislation that, provided in the web portal UFAM without the need to directly drive SECONS to obtain the desired document. Thus, it is proposed as suggestions for future work the development of software by the Institute of Computing face of positive findings and confirmed by research. / Este trabalho desenvolveu uma ferramenta cujo funcionamento se realizou com base nos dados oriundos de um sistema de gerenciamento de documentos, idealizado com o objetivo de rastrear, registrar, controlar e recuperar informações e documentos no âmbito da Secretaria Geral dos Conselhos Superiores da Universidade Federal do Amazonas. Finalizou com a avaliação da ferramenta de busca, o Dicionário de Dados, que se integra ao sistema gerenciador de documentos, identificado como SGD/SECONS. O referencial teórico se embasou na literatura sobre sistemas de informação, gestão do conhecimento e aplicações de tecnologia da informação como suporte dinâmico para otimizar as atividades ali desenvolvidas. Empregou-se como procedimentos metodológicos a observação direta das atividades no setor, as reuniões realizadas com os colaboradores e a pesquisa documental efetivada nos documentos primários e secundários existentes na Secretaria dos Conselhos Superiores da UFAM, alguns ali produzidos e outros, recebidos no setor pesquisado para tratamento e transformação em produtos que são utilizados com a finalidade de balizar o funcionamento legal da Instituição, formadores da legislação interna. A produção dessas informações exige armazenagem, localização e recuperação segura e ágil, de modo a oferecer suporte legal aos gestores nos processos decisórios e à comunidade universitária em geral, razão da concepção da ferramenta para melhoria do sistema. Para o mapeamento e registro do sistema foram identificados os requisitos, considerando-se as experiências dos servidores internos que contribuíram para a construção do modelo da ferramenta desenvolvida para busca e captura das informações. O sistema foi avaliado em quatro momentos diferentes, com complexidades diversas, e os resultados afirmaram e comprovaram a sua eficácia e eficiência, assegurando respostas céleres e confiáveis aos gestores da UFAM, além da possibilidade de replicação do sistema e da ferramenta, em outros setores que funcionam de modo similar à SECONS, como as Câmaras das Pró-reitorias, secretarias de Unidades Acadêmicas e outros. Os resultados encontrados após as avaliações confirmaram o êxito da ferramenta, bem como do modelo manual adotado para gerenciar as informações e processos. Sugeriu-se a possibilidade futura de incremento do sistema, automatizando-o, oferecendo ao cliente, além da possibilidade de acompanhar o trâmite de um processo de seu interesse que esteja para julgamento nos Conselhos, a oferta da legislação produzida, disponibilizada no portal Web UFAM, sem necessidade acionar diretamente a SECONS, para obtenção do documento desejado. Assim, propõe-se a título de sugestão para trabalhos futuros o desenvolvimento de software pelo Instituto de Computação face aos resultados positivos encontrados e confirmados pela pesquisa.

The use of databases has become an integral part of modern human life. Often the data contained within databases has substantial value to enterprises and individuals. As databases become a greater part of people’s daily lives, it becomes increasingly interlinked with human behaviour. Negative aspects of this behaviour might include criminal activity, negligence and malicious intent. In these scenarios a forensic investigation is required to collect evidence to determine what happened on a crime scene and who is responsible for the crime. A large amount of the research that is available focuses on digital forensics, database security and databases in general but little research exists on database forensics as such. It is difficult for a forensic investigator to conduct an investigation on a DBMS due to limited information on the subject and an absence of a standard approach to follow during a forensic investigation. Investigators therefore have to reference disparate sources of information on the topic of database forensics in order to compile a self-invented approach to investigating a database. A subsequent effect of this lack of research is that compromised DBMSs (DBMSs that have been attacked and so behave abnormally) are not considered or understood in the database forensics field. The concept of compromised DBMSs was illustrated in an article by Olivier who suggested that the ANSI/SPARC model can be used to assist in a forensic investigation on a compromised DBMS. Based on the ANSI/SPARC model, the DBMS was divided into four layers known as the data model, data dictionary, application schema and application data. The extensional nature of the first three layers can influence the application data layer and ultimately manipulate the results produced on the application data layer. Thus, it becomes problematic to conduct a forensic investigation on a DBMS if the integrity of the extensional layers is in question and hence the results on the application data layer cannot be trusted. In order to recover the integrity of a layer of the DBMS a clean layer (newly installed layer) could be used but clean layers are not easy or always possible to configure on a DBMS depending on the forensic scenario. Therefore a combination of clean and existing layers can be used to do a forensic investigation on a DBMS. PROBLEM STATEMENT The problem to be addressed is how to construct the appropriate combination of clean and existing layers for a forensic investigation on a compromised DBMS, and ensure the integrity of the forensic results. APPROACH The study divides the relational DBMS into four abstract layers, illustrates how the layers can be prepared to be either in a found or clean forensic state, and experimentally combines the prepared layers of the DBMS according to the forensic scenario. The study commences with background on the subjects of databases, digital forensics and database forensics respectively to give the reader an overview of the literature that already exists in these relevant fields. The study then discusses the four abstract layers of the DBMS and explains how the layers could influence one another. The clean and found environments are introduced due to the fact that the DBMS is different to technologies where digital forensics has already been researched. The study then discusses each of the extensional abstract layers individually, and how and why an abstract layer can be converted to a clean or found state. A discussion of each extensional layer is required to understand how unique each layer of the DBMS is and how these layers could be combined in a way that enables a forensic investigator to conduct a forensic investigation on a compromised DBMS. It is illustrated that each layer is unique and could be corrupted in various ways. Therefore, each layer must be studied individually in a forensic context before all four layers are considered collectively. A forensic study is conducted on each abstract layer of the DBMS that has the potential to influence other layers to deliver incorrect results. Ultimately, the DBMS will be used as a forensic tool to extract evidence from its own encrypted data and data structures. Therefore, the last chapter shall illustrate how a forensic investigator can prepare a trustworthy forensic environment where a forensic investigation could be conducted on an entire PostgreSQL DBMS by constructing a combination of the appropriate forensic states of the abstract layers. RESULTS The result of this study yields an empirically demonstrated approach on how to deal with a compromised DBMS during a forensic investigation by making use of a combination of various states of abstract layers in the DBMS. Approaches are suggested on how to deal with a forensic query on the data model, data dictionary and application schema layer of the DBMS. A forensic process is suggested on how to prepare the DBMS to extract evidence from the DBMS. Another function of this study is that it advises forensic investigators to consider alternative possibilities on how the DBMS could be attacked. These alternatives might not have been considered during investigations on DBMSs to date. Our methods have been tested at hand of a practical example and have delivered promising results. / Dissertation (MEng)--University of Pretoria, 2013. / gm2014 / Electrical, Electronic and Computer Engineering / unrestricted

The purpose of this study is to design a database of resources for rational therapy. An investigation of the current health situation and reorientation towards primary health care (PHC) in South Africa evidenced the need for a database of resources which would meet the demand for rational therapy information made on the Helderberg College Library by various user groups as well as make a contribution to the national health information infrastructure. Rational therapy is viewed as an approach within PHC that is rational, common-sense, wholistic and credible, focusing on the prevention and maintenance of health. A model of the steps in database design was developed. A user study identified users' requirements for design and the conceptual schema was developed. The entities, attributes, relationships and policies were presented and graphically summarised in an Entity-Relationship (E-R) diagram. The conceptual schema is the blueprint for further design and implementation of the database. / Information Science / M.Inf.