A time series database (TSDB) represents a data point as a time and value, the value being the sensor value and the time being the time of record origination. Time series databases are pretty fast at data filtering and executing aggregation functions. In IoT, a lot of activity starts after the data is persisted in the database. Most of these activities involve generating dashboards and running queries to analyze the data and that is where a TSDB plays a major role.
Some of the popular time series databases are outlined next.
