What are some deprecated SQL features?

What are the main features of SQL?

Features of Structured Query Language (SQL)Data Manipulation Language (DML): Data Manipulation Language contains commands used to manipulate the data. ... Client server execution and remote database access: ... Security and authentication: ... Embedded SQL: ... Transaction Control Language: ... Advanced SQL:Features of Structured Query Language (SQL) - GeeksforGeeks

Is database mirroring deprecated in SQL Server 2019?

Unfortunately, this feature has been deprecated, but still, some organizations use database mirroring as a high availability solution. Database mirroring can be configured in SQL Server Standard edition.

Is database mirroring deprecated in SQL Server 2016?

As of February 2016, Microsoft states: “[Database Mirroring] will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.