JavaScript Object Notation was originally designed to transfer data; however, it soon found
another use as a way to persist data in NoSQL databases. Recently, the most popular …

The aim of the research was to improve the performance of graph operations in relational
database for semi-structured data. First of all, this required us to select a model that allows …

The aim of the paper is to present the possibilities of utilizing spatial (geographical)
information in the criminal analysis and to introduce the LINK software, which is able to …

The aim of the paper is to discuss the problem of geospatial data integration for criminal
analysis. In order to integrate and analyze various data sources the platform introduces an …

In this paper a data integration method for data warehouse federations has been proposed.
It often happens that for a query different component warehouses can generate different …

We examine properties of a peer to peer network comprising several agents that store
various types of local data and exchange them through established communication …

Semi-structural data tend to be problematic due to the sparsity of their attributes and due to
the fact that, regardless of their type, they are immensely diverse. This means that data …

Usability, defined as a measure of the ease with which a system can be learned or used, is
an important aspect of developing modern applications. It is crucial not only in common-use …