Time Series Database (TSDB), is a particular type of data repository. TSDBs are capable of diverse functionalities regarding operations on time series data and are developed using different technologies. A large number of TSDB solutions, available both as open source and commercial software, has emerged in the last years. Selecting the proper TSDB is a challenging endeavour for a potential enterprise client. In this paper, a set of open-source TSDBs which includes InfluxDB, Graphite, RRDTool, Prometheus, OpenTSDB and TimescaleDB-has been selected for analysis, evaluation and ranking. A comparison of TSDBs implies the establishment of a set of attributes. A set of quantitative and qualitative attributes which have different scales and units of measure has been selected. The problem of selecting or ranking TSDBs evaluated in this paper with a set of attributes is a Multi-Attribute Decision Making problem (MADM). For solving the TSDBs evaluation, analysis and selection a multi-attribute TSDBs maturity model has been proposed. The model for the selected TSDBs set and for the 18 attributes, 10 quantitative and 8 qualitative, has been validated. The model for all the attributes, both quantitative and qualitative, has been solved and, finally, a comparison between the obtained rankings has been made. The comparison of the ranks obtained shows that the leading TSDB is InfluxDB.
This paper presents an integrated information system model designed to be used by the Romanian public entities. This system is part of a research project that promotes the public-private sector partnership in Romania. So, the main objective of the research presented in this paper is the development of an integrated information system for management of activities (IISMA) that provides the management of public institution information by making use of resources and activities, software functional modules and open-source computing applications. The solution proposed ensures the streamlining of the information flow, the improvement of the management of resources and inter-institutional inter-operability by offering a versatile, safe and resilient solution that can be customised depending on the specific requirements of the public entities. IISMA is based on open-source solutions and functional software specialization modules, aiming to reduce the complexity of the conceptual separation. IISMA ensures: functional disconnection of modules (keeping inter-operability), standardisation of functional modules, implementation of extendibility facilities and component re-use facilities and protection of data which is processed, used and stored.
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