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Data Backup and Data Storages
Paytok, Marian ; Beker, Zdeněk (referee) ; Kříž, Jiří (advisor)
This thesis focuses on backup, restore and data storage. It also describes the issues and method of data backup in a particular company. The result should be an optimal solution to the problem of data backup and data storage in this company.
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UKRR – a collaborative collection management strategy
Appleyard, Andrew
The British Library is one of the greatest research libraries in the world. It holds in excess of 150 million items, from original print newspapers to manuscripts, books, journals sound recordings and unique personal archives. The collection is both historic and contemporary bringing together the nation’s memory for the purpose of cultural appreciation and research. In terms of meeting its defined purposes1, the British Library (BL) must transform to meet the current and future needs of research demands because the way in which society seeks knowledge has changed. The traditional library is one of card catalogues and reference numbers that navigate the researcher in an analogue world to the knowledge they seek. Nowadays researchers expect the data and content in their hands anywhere, in dynamic and social spaces, rejecting the past norms of formal research establishments. As the BL adjusts to accommodate this need it must still maintain access to its print collections and of course preserve them for future generations. The UK Research Reserve (UKRR) project set the ambitious target of saving 100km of shelf space within University Libraries by de-duplicating low use print journals on the premise that a master, accessible copy is held by the BL. This collaboration between the BL, UK Higher Education and (formerly) the Higher Education Funding Council for England (HEFCE) has subsequently delivered 128km of library shelf space amounting to £29m in capital savings, and over £18m in recurring estate management costs. This paper describes the evolution of the new access and preservation approach building on the UKRR project outcomes. It will explain how print preservation and access can fit harmoniously alongside a digital strategy reflecting the need for a wider access model that democratises access to content whilst ensuring preservation for future generations. It will also contextualise the approach as part of the national Library’s mandate and why the combination has proven to be a recipe of success.
Fulltext: idr-1381_1_paper -  PDF
Slides: idr-1381_3_presentation - PDF
Video: idr-1381_2_video -  MP4
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Deduplication methods in databases
Vávra, Petr ; Kyjonka, Vladimír (advisor) ; Skopal, Tomáš (referee)
In the present work we study the record deduplication problem as an issue of data quality. We define duplicates as records having different syntax and the same semantics and which are representing the same real-world entity. The main goal of this work is to provide the overview of existing deduplication methods according to their requirements, results and usability. We focus on the comparison of two groups of record deduplication methods - with and without the domain knowledge. Therefore, the second part of this work is dedicated to the implementation of our method which does not utilize any domain knowledge and compare its results with the results of commercial tool deeply utilizing the domain knowledge.
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Data backup technology with a focus on backup between remote sites using the EMC Avamar deduplication backup
KINDELMANN, Ladislav
The aim of this dissertation is to analyze the way data backup of remote sites deduplication technology system used by EMC Avamar. This is a special type of data compression used not only when saving to disk arrays, but also in a virtual environment. Deduplication ensures saving storage space and reliability of data recovery. EMC Avamar system is one of the best-engineered and most extensive systems of which the above technology is used. The dissertation is divided into two parts - theoretical and practical. In the theoretical part student briefly summarize the available backup technologies and describes the remote backup methods, including examples using available software and hardware requirements. Then it specifies details of EMC Avamar and its implementation, HW requirements and functioning of the entire system. Student will analyzes the data deduplication technology, which the system uses, description of data transferring and the possible advantages and disadvantages compared to other systems. In the practical part it creates own proposal for implementation of data backup using the above mentioned system in a business environment between the two branches of the company. The aim will be to show the real technology features, advantages and shortcomings. The conclusion of the dissertation the student all accompanied overview of the use of backup systems in today's global market.
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Data Backup and Data Storages
Paytok, Marian ; Beker, Zdeněk (referee) ; Kříž, Jiří (advisor)
This thesis focuses on backup, restore and data storage. It also describes the issues and method of data backup in a particular company. The result should be an optimal solution to the problem of data backup and data storage in this company.
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Componentization of Linked Data Transformations
Pilař, Štěpán ; Mynarz, Jindřich (advisor) ; Knap, Tomáš (referee)
The diploma thesis is focused on transformation of linked data and opportunities for componentization of extract, transform, load process resulting in reusability of such components. UnifiedViews serves as a framework for demonstration of implementa-tion of selected components. Initial review of related fields of study, relational data oriented ETL and linked data quality management being most prominent, is followed by bottom-up analysis of existing extractors and transformations. Identified common transformations are supplemented by operations known from transformations of relational data. Options and limits of each component candidate are discussed as well as possible cooperation with other components. The next section discusses supported ways of implementation in the selected environment and provides a list of key questions for decision making process is provided. The last part describes implementation of selected components with respect to the approach suggested in the preceding section. Practical use as well as limitations of the implemented components are demonstrated on tasks transforming public contracts datasets.
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