Explanation
Azure SQL Database is a fully managed platform as a service (PaaS) database engine that handles most of the
database management functions such as upgrading, patching, backups, and monitoring without user
involvement.
SQL Database delivers predictable performance with multiple resource types, service tiers, and compute sizes.
It provides dynamic scalability with no downtime, built-in intelligent optimization, global scalability and
availability, and advanced security options. These capabilities allow you to focus on rapid app development
and accelerating your time-to-market, rather than on managing virtual machines and infrastructure.

Explanation
Hierarchical namespace
https://learn.microsoft.com/en-us/dynamics365/customer-insights/own-data-lake-storage

Explanation
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.