Software for solidity smart contracts databases on ethereum blockchain, and recommendations for sustainable development with software for esri digital maps programming

Solidity smart contracts applications of Ethereum blockchain give huge unlimited opportunities for more sustainable development implementations. One of the most important applications of Ethereum blockchain will be the decentralized databases. Ethereum databases, with their huge security and integrity can provide perfect mechanism for storing and sharing the data of the highly important projects. Mixed Research Methods were used in this study to design software for Ethereum databases, and to examine how and how much features can be added to the software, with the considerations of the barriers and the limitations of Solidity smart contracts programming language and Ethereum blockchain platform. C Sharp programming language with MS Xamarin and MS Visual Studio 2019 were used for Android, iPhone and Windows versions of the software. JavaScript and Java programming languages were used in the beginning of the software development. The achieved software can make any Ethereum database with parent-child relationships in between the tables. More professional features will be added in future study as soon as possible. The study used Multistage Cluster Sampling method for choosing and explaining recommendations for sustainable development applications to be done by the software of Ethereum databases with integration of software for ESRI digital maps programming. The applications are about the real estate business full automation and about the transparent environmental management to protect the Mediterranean Sea from the pollution. The 2 software are considered Best Available Technology BAT, and the BAT is considered very important tool to achieve the Sustainable Development Goals SDGs.