SQL Server 2019 is a relational database management system (RDBMS) developed by Microsoft. It is designed to handle large amounts of data and is used in a variety of applications, including data warehousing, online transaction processing, and business intelligence.
SQL Server 2019 offers a number of benefits over previous versions, including improved performance, scalability, and security. It also includes a number of new features, such as support for big data and machine learning.