SQL Server, also known as Microsoft SQL Server, is a relational database management system (RDBMS) developed by Microsoft. It is designed to store and manage data, providing tools for database management, querying, and data analysis. SQL Server uses Structured Query Language (SQL) for querying and managing databases.

Key features of SQL Server include:

. Relational Database: Data is organized in tables with rows and columns, and relationships between tables can be established through keys (primary, foreign, etc.).

• Data Security: SQL Server provides strong security features, including authentication, encryption, and access control.

• Scalability: It supports large-scale databases and can handle significant amounts of data and users.

• Performance Tuning: SQL Server has tools for optimizing performance, such as indexing, query optimization, and data partitioning.

• High Availability: Features like Always On Availability Groups and database mirroring provide solutions for minimizing downtime.

• Backup and Restore: SQL Server allows for regular database backups, ensuring data can be restored in case of failure.

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