SQLite that is not relational but using key/value pairs

• Key-value database: It is a non-relational database that stores data as a collection of key-value pairs, where the key is used as a unique identifier. KVDB has simple operations and robust scalability.
• Time Series Database: Time Series Database (TSDB) stores data in time sequence. TSDB data has a timestamp, large data storage, and high insertion and query performance.