Abstract. Many systems have to choose between user-friendly visual query editor and textual querying language with industrial strength in order to deal with big amount of complex data. Some of them provide both ways of accessing data in a warehouse.In this paper, we present key features of domain specific querying language, which we designed as a part of informational system of a steel production plant. This language aims to give an opportunity of easy data manipulation to those who know what the data actually is and to provide an easy way to discover what the data is for others. We also provide an evaluation of the designed language. The main focus of our estimation was to measure effort required for discovering dataset and deriving simple math expressions.Although the paper overviews a data model for one specific domain, it can be easily applied for different domains.

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Abstract. This article covers the problem of access to multidimensional data with the dimension of 10 4 order. It contains the description of the system and the problem revealed in the process of its building, as well as engineering solutions applied to solve the similar problems. It is also clarified, why such solutions cannot be used for the treatment of the problem concerned. The existing engineering solutions are specified so that it is possible to presuppose the prospects of use of the fragments of such technologies for solving the problem in question.