Development of query language for retrieval, integration and presentation of data

The aim of this work was to improve the system Algator in the part, which deals with the analysis and presentation of data. First, we compared some query languages to find the most suitable for use in the system Algator. Algator stores data in a specific format, and the data are always combined in the same fashion. Therefore, special query language is more suitable because it can take advantage of these properties. We determined the simplified syntax of SQL and used in the system Algator. User interface and converter from JSON format to a simplified SQL and vice versa has been developed. Execution of queries has been optimized because some inquiries run too long. Functionality of calculated fields has been added, which allows to add additional fields that are calculated from other fields