The world is becoming increasingly digitized, and with this trend comes an increas-ing need for storing data for companies of all sizes. For smaller enterprises, thiscould prove to be a major challenge due to limitations in knowledge and financialassets. So the purpose of this study is to investigate how smaller companies cansatisfy their needs for...
Databases are all around us, and ensuring their efficiency is of great importance. Database optimisation has many parts and many methods, two of these parts are database tuning and database optimisation. These can then further be split into methods such as indexing. These indexing techniques have been studied and compared between Database Managemen...
This study is focused on indoor navigation network extraction for navigation applications based on available 3D building data and using SFCGAL library, e.g. simple features computational geometry algorithms library. In this study, special attention is given to 3D cadastre and BIM (building information modelling) datasets, which have been used as da...
Práce pojednává o rozšíření již existujícího nástroje GEM Winch na provádění datových řezů, vyhledávání a anonymizování osobních údajů v databázích. Ke čtyřem momentálně podporovaným databázovým systémům jsou přidány další dva - MySQL a Teradata. Aktuální podoba implementace způsobuje, že v implementacích pro jednotlivé databázové systémy, ale i v ...
: The IFC (Industry Foundation Classes) open format has been developed by BuildingSMART and regularized through ISO standards. It has been implemented into a BIM (Building Information Modeling) informative system for the AEC industry (Architecture Engineering and Construction). The IFC format has changed interoperability processes concerning archit...
Published in Automatic Control and Computer Sciences
AbstractThis article presents the analysis of approaches to data warehouse construction based on relational and NoSQL solutions and lists the limitations of the relational approach to data mining. The contradiction between data presentation in the real subject domain and the model of data presentation in the relational and NoSQL approaches is revea...
Published in Studies in health technology and informatics
The article presents the semantic model of diagnostics and treatment of patients with gastrointestinal bleedings when the reasons of bleeding cannot be establihed by means of a laboratory tests, endoscopy and colonoscopy.
Big data of type spatial is growing exponentially with the highest rate due to extensive growth in usage of sensors, IoT and mobile devices’ spatial data generation, therefore maintaining, processing and using such data efficiently, effectively with high performance has become one of the top priorities for Database management system providers, henc...
The Swedish Road Administration wants to compile all the national road database data from The Swedish Mapping, Cadastral and Land Registration Authority using a Geographical Information System compiler in order to increase the efficiency of data flow between their respective databases. The objective of this master’s thesis has been to build a softw...
Published in The VLDB Journal
Query optimizers depend heavily on statistics representing column distributions to create good query plans. In many cases, though, statistics are outdated or nonexistent, and the process of refreshing statistics is very expensive, especially for ad hoc workloads on ever bigger data. This results in suboptimal plans that severely hurt performance. T...
