Your company is designing a data store for internet-connected temperature sensors. The collected data will be used to analyze temperature trends. Which type of data store should you use? 

Answer options:

A. relational
B. time series
C. graph
D. columnar

B

Time series data is a set of values organized by time. Time series databases typically collect large amounts of data in real time from a large number of sources. Updates are rare, and deletes are often done as bulk operations. Although the records written to a time-series database are generally small, there are often a large number of records, and total data size can grow rapidly. Reference: https://docs.microsoft.com/en-us/azure/architecture/guide/technology-choices/data-store-overview