What are TSDBs?
Every single IoT device out there is sending data to some IoT platform. As we have discussed in the previous section, this data can come in different types and formats. However, all this data shares one thing in common: the timestamp.
The timestamp is as valuable as the data itself. Each data point is associated with timestamp information, so you can see when it was created. Knowing every data point timestamp allows you to order the information and build a historical trend. Then, you can visualize it, run analytics on it, perform transformations, and so on. You can see an example in the following figure:
Figure 4.2 – Time series data
Although the previous discussion can seem a little obvious, it reveals the critical value of the timestamp in IoT applications.
A TSDB allows you to manage time-related data by just performing simple queries. Every record in the database is associated with a timestamp. So, you can obtain only the data...
