Startup Idea : Javascript database with a UI

There is a huge demand in the enterprise market for performant internal solutions with respect to web. the main reason they lack in performance is improper design and huge data loads for view and manipulation of data. One way this problem can be addressed is by creating a javascript database that syncs automatically with enterprise databases like MSSQL, Oracle, etc. Creating a solution which can be less tiresome with respect to set up and configurations and more close to plug-in-and-play style. Also providing a UI for the javascript db to be able to design and map the data structures