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The aim of the article is to summarize and compare approaches of design and architecture of native XML databases. We discuss our results accomplished by utilizing the INEX data set in two open source database systems-eXist and Apache Xindice. There is also a basic performance comparison outlined as a basis for discussion about suitabil-ity for particular(More)
Conceptual modeling of XML data was made easier with the introduction of the XSEM model, which utilizes the MDA (Model-driven architecture) ideas of multi-level modeling. XCase is an implementation of this model, enabling users to model their problem domain as a Platform-independent model (PIM), from which Platform-specific models (PSM), XML schemas in our(More)
In this paper we deal with a particular type of database systems – native XML database systems. For this category of systems we discuss potential application of the taDOM locking protocol implemented in a functional update language – XML-λ. By combination of these theoretical approaches we obtain a solution for querying and updating XML data that can be(More)
In this paper we describe possible approaches how to store XML data, which is a key aspect for their further processing. One popular technique for managing XML data is to map the data to an existing database system, e.g., to the relational or object-relational database management system. We describe possible ways how to store XML data in relational(More)
Database indices are fundamental data structures that improve the speed of data retrieval operations. In this paper, we focus on native XML database systems and provide an elementary survey of existing approaches for indexing semistructured data employed in selected academic open-source systems. Considering the requirements set for a particular system,(More)