Titlebook: Information Technology and Systems; ICITS 2021, Volume 1 Álvaro Rocha,Carlos Ferrás,Teresa Guarda Conference proceedings 2021 The Editor(s)

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Managing, Locating and Evaluating Undefined Values in Relational Databasess. Undefined values can provide significant processing drop, whereas NULLs are not part of the B+tree indexes. In this paper, we discuss the existing techniques based on the data transformations and function-based indexes. The main contribution of the paper is based on our own techniques, mapping, a

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Usability Analysis of the Concordia Tool Applying Novel Concordance Searchingusability of a translation memory. The tool is described in detail with regard to main applied methods and differences when compared to already existing CAT tools. Concordia uses three data structures, i.e. hashed index, markers array and suffix array, which are loaded into memory to enable fast loo

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Prologue