Conclusion and Future Work
In this paper, we presented ChainSQL and its novel applications through three usecases that are implemented as a middleware between the user application and the database. The first usecase is a tamper-resistant multi-active database, the second usecase is a data-level disaster recovery backup and the third is an audit middleware. The effectiveness of the system is demonstrated with the help of a detailed experimental study. ChainSQL is the first system of its kind that features the tamper-resistance of the blockchain and the fast query processing of the distributed databases. The utility of the ChainSQL is evident from its business usecases in domains including finance and supplychain, therefore, it offers promising application scenarios for future. A number of considerations from system implementation point of view are also in the pipeline. For instance, the support for big data analytics in ChainSQL, and the implementation of complex indexes for query optimisation.
