Dissertations / Theses: 'Management of databases'

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Alkahtani, Mufleh M. "Modeling relational database management systems." Virtual Press, 1993. http://liblink.bsu.edu/uhtbin/catkey/865955.

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Almost all of the database products developed over the past few years are based on what is called the relational approach.The purpose of this thesis is to characterize a relational data base management system, we do this by studying the relational model in some depth.The relational model is not static, rather it has been evolving over time. We trace the evolution of the relational model. We will also consider the ramifications of the relational model for modern database systems.
Department of Computer Science

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Vargas, Herring Luis Carlos. "Integrating databases and publish/subscribe." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609151.

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Zhang, Hao. "Querying databases a tale of two C# approaches /." Click here for download, 2010. http://proquest.umi.com.ps2.villanova.edu/pqdweb?did=2019786971&sid=1&Fmt=2&clientId=3260&RQT=309&VName=PQD.

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Aleksic, Mario. "Incremental computation methods in valid and transaction time databases." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/8126.

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Sullivan, Larry. "Performance issues in mid-sized relational database machines /." Online version of thesis, 1989. http://hdl.handle.net/1850/10445.

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Ge, Shen, and 葛屾. "Advanced analysis and join queries in multidimensional spaces." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49799332.

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Multidimensional data are ubiquitous and their efficient management and analysis is a core database research problem. There are lots of previous works focusing on indexing, analyzing and querying multidimensional data. In this dissertation, three challenging advanced analysis and join problems in multidimensional spaces are proposed and studied, providing efficient solutions to their related applications. First, the problem of generalized budget constrained optimization query (Gen-BOQ) is studied. In real life, it is often difficult for manufacturers to create new products dominating their competitors, due to some constraints. These constraints can be modeled by constraint functions, and the problem is then to decide the best possible regions in multidimensional spaces where the features of new products could be placed. Using the number of dominating and dominated objects, the profitability of these regions can be evaluated and the best areas are then returned. Although GenBOQ computation is challenging due to its high complexity, an efficient divide-and-conquer based framework is offered for this problem. In addition, an approximation method is proposed, making tradeoffs between the result quality and the query cost. Next, the efficient evaluation of all top-k queries (ATOPk) in multidimensional spaces is investigated, which compute the top ranked objects for a group of preference functions simultaneously. As an application of such a query, consider an online store, which needs to provide recommendations for a large number of users simultaneously. This problem is somewhat overlooked by past research; in this thesis, batch algorithms are proposed instead of naïvely evaluating top-k queries individually. Similar preferences are grouped together, and two algorithms are proposed, using block indexed nested loops and a view-based thresholding strategy. The optimized view-based threshold algorithm is demonstrated to be consistently the best. Moreover, an all top-k query helps to evaluate other queries relying on the results of multiple top-k queries, such as reverse top-k queries and top-m influential queries proposed in previous works. It is shown that applying the view-based approach to these queries can improve the performance of the current state-of-the-art by orders of magnitude. Finally, the problem of spatio-textual similarity joins (ST-SJOIN) on multidimensional data is considered. Given both spatial and textual information, ST-SJOIN retrieves pairs of objects which are both spatially close and textually similar. One possible application of this query is friendship recommendation, by matching people who not only live nearby but also share common interests. By combining the state-of-the-art strategies of spatial distance joins and set similarity joins, efficient query processing algorithms are proposed, taking both spatial and textual constraints into account. A batch processing strategy is also introduced to boost the performance, which is also effective for the original textual-only joins. Using synthetic and real datasets, it is shown that the proposed techniques outperform the baseline solutions.
published_or_final_version
Computer Science
Doctoral
Doctor of Philosophy

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Khayundi, Peter. "A comparison of open source object-oriented database products." Thesis, University of Fort Hare, 2009. http://hdl.handle.net/10353/254.

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Object oriented databases have been gaining popularity over the years. Their ease of use and the advantages that they offer over relational databases have made them a popular choice amongst database administrators. Their use in previous years was restricted to business and administrative applications, but improvements in technology and the emergence of new, data-intensive applications has led to the increase in the use of object databases. This study investigates four Open Source object-oriented databases on their ability to carry out the standard database operations of storing, querying, updating and deleting database objects. Each of these databases will be timed in order to measure which is capable of performing a particular function faster than the other.

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Huang, Jianyuan. "Computer science graduate project management system." CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3250.

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This project is a development and tracking system for graduate students in the Department of Computer Science of CSUSB. This project will cover front-end web site development, back-end database design and security. This website provides secure access to information about ideas for projects, status on on-going projects, and reports of finished projects using My SQL and Apache Tomcat.

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Sun, Jimeng. "Analysis of predictive spatio-temporal queries /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?COMP%202003%20SUN.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.
Includes bibliographical references (leaves 62-65). Also available in electronic version. Access restricted to campus users.

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Jakobovits, Rex M. "The Web interfacing repository manager : a framework for developing web-based experiment management systems /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/7007.

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Jermaine, Christopher. "Approximate answering of aggregate queries in relational databases." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/9221.

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Pinheiro, Diogo Ricardo Marques. "Large databases management of space missions." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/8617.

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Mestrado em Engenharia de Computadores e Telemática
A cosmologia é uma área em expansão, sendo realizadas cada vez mais missões espaciais com o objectivo de conhecer melhor o universo, nomeadamente descobrir a sua origem e determinar a sua expansão. Com o avanço da tecnologia, os satélites são equipados com detectores cada vez mais sofisticados, permitindo obter mapas do c eu de elevada resolução. Para facilitar a análise desses dados é necessário recorrer a algumas ferramentas, como por exemplo software que permita representar esses dados graficamente sob a forma de mapas. Devido ao grande aumento da resolução destes mapas, actualmente na ordem de 1 bilião de pixéis, torna-se necessário criar um visualizador que suporte o seu processamento e que os permita manipular com um desempenho e fluidez aceitável. O objectivo desta dissertação consiste na criação de uma aplicação para visualizar mapas espaciais Hierarchical Equal Area isoLatitude Pixelization (HEALPix), armazenados em formato Flexible Image Transport System (FITS), de elevada resolução, e que permita a sincronização de múltiplos mapas em simultâneo, usando diferentes tipos de projecções.
Cosmology is a growing area, which translates into an increase of space missions deployed, with the aim of know the universe better, in particular discover its origin and its expansion rate. With the advance of technology, satellites are equipped with detectors even more sophisticated, allowing gathering sky maps of higher resolution. To ease the task of analyze these data, it is necessary to use some tools, for example software that allows to represent the data graphically in the form of sky maps. Due to the increase of the sky maps resolution, actually around 1 billion pixels, it is necessary to create a viewer that supports their processing, and allows to manipulate them with acceptable performance and fluidity. The goal of this thesis is to develop a application to visualize high resolution Hierarchical Equal Area isoLatitude Pixelization (HEALPix) maps, stored in Flexible Image Transport System (FITS) format, and that allows the synchronization between multiple maps simultaneous, using diferent types of projections.

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Nulty, William Glenn. "Geometric searching with spacefilling curves." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/24520.

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Willshire, Mary Jane. "The effects of inheritance on the properties of physical storage models in object oriented databases." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/9236.

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Kern, Deborah R. "Design and implementation of the acoustic database and acoustic trainer modules for "ARGOS"." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA232052.

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Thesis (M.S. in Computer Science)--Naval Postgraduate School, June 1990.
Thesis Advisor(s): Wu, C. Thomas. Second Reader: Lum, Vincent Y. "June 1990." Description based on signature page. DTIC Identifier(s): Software engineering, event driven multimedia database, acoustic database. Author(s) subject terms: Software engineering, event driven multimedia database, acoustic database. Includes bibliographical references (p. 96). Also available online.

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Kitinya, Sylivano Chiluli Nonga. "Relational multimedia databases." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/1242/.

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This thesis is concerned with the design and im plementation of a Relational Multimedia Database System, in short RMDBS. RMDBS is designed to efficiently use storage space and manipulate various kinds of data; attribute data, bit-m apped pictures, and program s in binary code. RMDBS is an integrated system which enables the user to manage and control operations on the different forms of data in a user friendly manner. This means that even nonexperienced users can work with the system. The work described in this thesis is novel in that a true multimedia database has been implemented within the framework of a traditional relational DBMS. Previous work in this area has concentrated either in building data base management systems for storing picture-based data or multimedia databases which are not true data base management systems. RMDBS is implemented using the Revelation data base management system.

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Moatassem, Nawal N. "A Study of Migrating Biological Data from Relational Databases to NoSQL Databases." Youngstown State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1442486094.

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Shou, Yutao Sindy, and 壽玉濤. "Efficient query processing for spatial and temporal databases." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29853655.

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Bhasker, Bharat. "Query processing in heterogeneous distributed database management systems." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/39437.

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The goal of this work is to present an advanced query processing algorithm formulated and developed in support of heterogeneous distributed database management systems. Heterogeneous distributed database management systems view the integrated data through an uniform global schema. The query processing algorithm described here produces an inexpensive strategy for a query expressed over the global schema. The research addresses the following aspects of query processing: (1) Formulation of a low level query language to express the fundamental heterogeneous database operations; (2) Translation of the query expressed over the global schema to an equivalent query expressed over a conceptual schema; (3) An estimation methodology to derive the intermediate result sizes of the database operations; (4) A query decomposition algorithm to generate an efficient sequence of the basic database operations to answer the query. This research addressed the first issue by developing an algebraic query language called cluster algebra. The cluster algebra consists of the following operations: (a) Selection, union, intersection and difference, which are extensions of their relational algebraic counterparts to heterogeneous databases; (b) Normal-join and normal-projection which replace their counterparts, join and projection, in the relational algebra; (c) Two new operators embed and unembed to restructure the database schema. The second issue of the query translation was addressed by development of an algorithm that translates a cluster algebra query expressed over the virtual views to an equivalent cluster algebra query expressed over the conceptual databases. A non-parametric estimation methodology to estimate the result size of a cluster algebra operation was developed to address the third issue described above. Finally, this research developed a query decomposition algorithm, applicable to the relational and non-relational databases, that decomposes a query by computing all profitable semi-join operations, followed by the determination of the best sequence of join operations per processing site. The join optimization is performed by formulating a zero-one integer linear program that uses the non-parametric estimation technique to compute the sizes of intermediate results. The query processing algorithm was implemented in the context of DAVID, a heterogeneous distributed database management system.
Ph. D.

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Jiang, Yibin. "On-line multimedia management system." CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3221.

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Online Multimedia Management System (OMMS) is a project to provide users to store and share their mutimedia files. The users and administrator can modify and update the multimedia files and database information from a normal web browser. The administrator and users with access have different levels of permission.

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Morsi, Magdi M. A. "Extensible object-oriented databases with dynamic schemas." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/9121.

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Obermeyer, Lincoln Lance. "Abstractions and algorithms for active multidatabases /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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Tuck, Terry W. "Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc2743/.

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Many activities are comprised of temporally dependent events that must be executed in a specific chronological order. Supportive software applications must preserve these temporal dependencies. Whenever the processing of this type of an application includes transactions submitted to a database that is shared with other such applications, the transaction concurrency control mechanisms within the database must also preserve the temporal dependencies. A basis for preserving temporal dependencies is established by using (within the applications and databases) real-time timestamps to identify and order events and transactions. The use of optimistic approaches to transaction concurrency control can be undesirable in such situations, as they allow incorrect results for database read operations. Although the incorrectness is detected prior to transaction committal and the corresponding transaction(s) restarted, the impact on the application or entity that submitted the transaction can be too costly. Three transaction concurrency control algorithms are proposed in this dissertation. These algorithms are based on timestamp ordering, and are designed to preserve temporal dependencies existing among data-dependent transactions. The algorithms produce execution schedules that are equivalent to temporally ordered serial schedules, where the temporal order is established by the transactions' start times. The algorithms provide this equivalence while supporting currency to the extent out-of-order commits and reads. With respect to the stated concern with optimistic approaches, two of the proposed algorithms are risk-free and return to read operations only committed data-item values. Risk with the third algorithm is greatly reduced by its conservative bias. All three algorithms avoid deadlock while providing risk-free or reduced-risk operation. The performance of the algorithms is determined analytically and with experimentation. Experiments are performed using functional database management system models that implement the proposed algorithms and the well-known Conservative Multiversion Timestamp Ordering algorithm.

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Daly, William G. "A graphical management system for semantic muiltimedia databases." Thesis, University of York, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235727.

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Ogunyadeka, Adewole C. "Transactions and data management in NoSQL cloud databases." Thesis, Oxford Brookes University, 2016. https://radar.brookes.ac.uk/radar/items/c87fa049-f8c7-4b9e-a27c-3c106fcda018/1/.

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NoSQL databases have become the preferred option for storing and processing data in cloud computing as they are capable of providing high data availability, scalability and efficiency. But in order to achieve these attributes, NoSQL databases make certain trade-offs. First, NoSQL databases cannot guarantee strong consistency of data. They only guarantee a weaker consistency which is based on eventual consistency model. Second, NoSQL databases adopt a simple data model which makes it easy for data to be scaled across multiple nodes. Third, NoSQL databases do not support table joins and referential integrity which by implication, means they cannot implement complex queries. The combination of these factors implies that NoSQL databases cannot support transactions. Motivated by these crucial issues this thesis investigates into the transactions and data management in NoSQL databases. It presents a novel approach that implements transactional support for NoSQL databases in order to ensure stronger data consistency and provide appropriate level of performance. The novelty lies in the design of a Multi-Key transaction model that guarantees the standard properties of transactions in order to ensure stronger consistency and integrity of data. The model is implemented in a novel loosely-coupled architecture that separates the implementation of transactional logic from the underlying data thus ensuring transparency and abstraction in cloud and NoSQL databases. The proposed approach is validated through the development of a prototype system using real MongoDB system. An extended version of the standard Yahoo! Cloud Services Benchmark (YCSB) has been used in order to test and evaluate the proposed approach. Various experiments have been conducted and sets of results have been generated. The results show that the proposed approach meets the research objectives. It maintains stronger consistency of cloud data as well as appropriate level of reliability and performance.

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Zhao, Wenzhong. "Probabilistic databases and their application." Lexington, Ky. : [University of Kentucky Libraries], 2004. http://lib.uky.edu/ETD/ukycosc2004d00183/wzhao0.pdf.

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Thesis (Ph. D.)--University of Kentucky, 2004.
Title from document title page (viewed Jan. 7, 2005). Document formatted into pages; contains x, 180p. : ill. Includes abstract and vita. Includes bibliographical references (p. 173-178).

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Lau, Ho Lam. "The development of the nested relational sequence model to support XML databases /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?COMP%202002%20LAU.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 87-96). Also available in electronic version. Access restricted to campus users.

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Tsakalis, Maria. "Implementing QT-selectors and updates for a primary memory version of Aldat." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66106.

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Wu, Yongjian. "An empirical study of the use of conceptual models for mutation testing of database application programs." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37599434.

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Tao, Yufei. "Indexing and query processing of spatio-temporal data /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?COMP%202002%20TAO.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 208-215). Also available in electronic version. Access restricted to campus users.

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Dalvi, Nilesh. "Managing uncertainty using probabilistic databases /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/6920.

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Visavapattamawon, Suwanna. "Application of active rules to support database integrity constraints and view management." CSUSB ScholarWorks, 2001. https://scholarworks.lib.csusb.edu/etd-project/1981.

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The project demonstrates the enforcement of integrity constraints in both the conventional and active database systems. The project implements a more complex user-defined constraint, a complicated view and more detailed database auditing on the active database system.

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Norrie, Moira C. "A collection model for data management in object-oriented systems." Thesis, University of Glasgow, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283835.

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Nilsson, Daniel, and Henrik Norin. "Adaptive QoS Management in Dynamically Reconfigurable Real-Time Databases." Thesis, Linköping University, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2800.

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During the last years the need for real-time database services has increased due to the growing number of data-intensive applications needing to enforce real-time constraints. The COMponent-based Embedded real-Time database (COMET) is a real-time database developed to meet these demands. COMET is developed using the AspeCtual COmponent-based Real-time system Development (ACCORD) design method, and consists of a number of components and aspects, which can be composed into a number of different configurations depending on system demands, e.g., Quality of Service (QoS) management can be used in unpredictable environments.

In embedded systems with requirementson high up-time it may not be possible to temporarily shut down the system for reconfiguration. Instead it is desirable to enable dynamic reconfiguration of the system, exchanging components during run-time. This in turn sets demands on the feedback control of the system to adjust to these new conditions, since a new time variant system has been created.

This thesis project implements improvements in COMET to create a more stable database suitable for further development. A mechanism for dynamic reconfiguration of COMET is implemented, thus, enabling components and aspects to be swapped during run-time. Adaptive feedback control algorithms are also implemented in order to better adjust to workload variations and database reconfiguration.

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Sinha, Aman. "Memory management and transaction scheduling for large-scale databases /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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Lu, An. "Processing and management of uncertain information in vague databases /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20LU.

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Mondini, Fabio Massimo. "The role of object-oriented databases in project management." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11666.

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Wu, Yongjian, and 吳勇堅. "An empirical study of the use of conceptual models for mutation testing of database application programs." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37599434.

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Lam, Franky Shung Lai Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Optimization techniques for XML databases." Awarded by:University of New South Wales. Chemical Sciences & Engineering, 2007. http://handle.unsw.edu.au/1959.4/40702.

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In this thesis, we address several fundamental concerns of maintaining and querying huge ordered label trees. We focus on practical implementation issues of storing, updating and query optimization of XML database management system. Specifically, we address the XML order maintenance problem, efficient evaluation of structural join, intrinsic skew handling of join, succinct storage of XML data and update synchronization of mobile XML data.

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Gong, Guohui. "On concurrency control in logbased databases." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/8175.

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Higgins, Christopher Paul. "Logic and databases : an object oriented approach." Thesis, University of York, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317651.

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Bourbonnais, Richard Joseph. "Visual assessment and relational database management /." This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-07112009-040335/.

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Gibson, Mark G. "The need for object-oriented systems to extend or replace the relational database model to solve performance problems." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834637.

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The relational model has dominated the database field because of its reduced application development time and non-procedural data manipulation features. It has significant problems, however, including weak integrity constraints. This paper discusses the need for object oriented techniques to improve on these flaws. Three existing DBMS will be discussed: IRIS, ORION, and OZ.
Department of Computer Science

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Hall, Neil Scott. "Impact of data modeling and database implementation methods on the optimization of conceptual aircraft design." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/16847.

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Lodico, Marc Richard. "SQLSDM : a SQL front-end semantic data model /." Online version of thesis, 1989. http://hdl.handle.net/1850/10620.

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Burpo, John D. "The feasibility of using the Naval Aviation Logistics Data Analysis (NALDA) databases for the Expert System Advisor for Aircraft Maintenance Scheduling (ESAAMS)." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA243108.

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Thesis (M.S. in Management)--Naval Postgraduate School, December 1990.
Thesis Advisor(s): McCaffrey, Martin J. Second Reader: Bui, Tung X. "December 1990." Joint authors: Description based on title screen as viewed on April 01, 2010. DTIC Descriptor(s): Maintenance management, knowledge based systems, expert systems, aircraft maintenance, advisory activities, scheduling, theses, accuracy, quantitative analysis, data bases, reliability DTIC Identifier(s): NALDA (Naval Aviation Logistics Data Analysis) Author(s) subject terms: NALDA, ESAAMS, Expert system, Knowledge Base Includes bibliographical references (p. 51-53). Also available in print.

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Atila, Yavuz Vural. "Design and implementation of a multimedia DBMS sound management integration /." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA245774.

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Thesis (M.S. in Engineering Science)--Naval Postgraduate School, December 1990.
Thesis Advisor(s): Lum, Vincent Y. Second Reader: Hsiao, David. "December 1990." Description based on title screen as viewed on ... DTIC Descriptor(s): Data bases, data management, sound, systems engineering, interfaces, alphanumeric data, integration, user needs, media, microcomputers, records, storage, sun, computers, local area networks, management, environments, theses DTIC Identifier(s): Data bases, systems engineering, sound, data management, MDBMS (multimedia database management system), theses, man computer interface, catalogs, data storage systems Author(s) subject terms: Multimedia Database Management System, Multimedia, DBMS, MDBMS, Sound Media Management, Sound Database Includes bibliographical references (p. 62-64).62 Also available in print.

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King, Kraig. "Linking Moving Object Databases with Ontologies." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/KingK2007.pdf.

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Yang, Yin. "Join processing in non-conventional databases /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20YANG.

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Lohfink, Alex. "The representation and management of evolving features in geospatial databases." Thesis, University of South Wales, 2009. https://pure.southwales.ac.uk/en/studentthesis/the-representation-and-management-of-evolving-features-in-geospatial-databases(f955a3f3-dff4-4419-8b3b-809a7d477d81).html.

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Geographic features change over time, this change being the result of some kind of event or occurrence. It has been a research challenge to represent this data in a manner that reflects human perception. Most database systems used in geographic information systems (GIS) are relational, and change is either captured by exhaustively storing all versions of data, or updates replace previous versions. This stems from the inherent diffculty of modelling geographic objects in relational tables. This diffculty is compounded when the necessary time dimension is introduced to model how those objects evolve. There is little doubt that the object-oriented (OO) paradigm holds signi cant advantages over the relational model when it comes to modelling real-world entities and spatial data, and it is argued that this contention is particularly true when it comes to spatio-temporal data. This thesis describes an object-oriented approach to the design of a conceptual model for representing spatio-temporal geographic data, called the Feature Evolution Model (FEM), based on states and events. The model was used to implement a spatio-temporal database management system in Oracle Spatial, and an interface prototype is described that was used to evaluate the system by enabling querying and visualisation.

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Dissertations / Theses on the topic 'Management of databases'

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