SQLite is a wonderful UWP software app package for internally customizing database definition, plus derivations of custom app unique feature behaviors to be implemented with that SQLite as internal app database storage package. Such allows each app designer to custom design sleek and honed data engines for the sole tasks at hand. I'm glad I read here that SQLite is going strong, as it is well supported and well documented. Client side app code that wields SQLite can be optimized and limited needs kept clean and efficient, without server side replication bulk and sluggishness. Good article about the state of other platforms.