FAQs about Microsoft SQL Server
Microsoft SQL Server is a relational database management system used to store, manage, secure, and analyse business data. It is commonly used for business applications, websites, reporting systems, data platforms, and enterprise workloads.
SQL Server is used to manage structured data for applications and business systems. Common uses include:
- Business application databases
- Website and ecommerce databases
- Customer and transaction data
- Reporting and business intelligence
- Data warehousing
- Application back-end databases
- Enterprise data management
Choose SQL Server Standard for many small and medium business workloads that need reliable database, reporting, and management capabilities. Choose SQL Server Enterprise for large, mission-critical environments that require greater scalability, performance, availability, and advanced enterprise features.
Microsoft also offers Express and Developer editions for specific non-production or entry-level uses.
SQL Server Standard provides core database management, security, reporting, and business intelligence capabilities for many business workloads. SQL Server Enterprise is designed for more demanding environments and provides higher scalability together with additional performance, availability, and advanced data-management capabilities.
Hardware and feature limits also differ between editions. For SQL Server 2025, for example, Standard Database Engine compute is limited to the lesser of four sockets or 32 cores, while Enterprise can use the operating system maximum.
Microsoft provides free SQL Server editions for certain uses. SQL Server Express is a free entry-level edition intended for smaller data-driven applications, while Developer editions are free for development and testing rather than production workloads.
Upgrading can provide newer security, performance, compatibility, and database capabilities. The right version depends on your applications, operating system, hardware, database compatibility requirements, and licensing needs.
Before upgrading, confirm that your existing SQL Server edition and version have a supported upgrade path to the release you plan to install.
Yes. SQL Server supports compatible Windows Server operating systems, although the exact supported versions depend on the SQL Server release you install. Always check Microsoft's system requirements for your chosen version before purchasing.
Yes. Microsoft SQL Server is available for supported Linux environments as well as Windows. Microsoft states that SQL Server licensing is the same for Linux and Windows, although installation and platform requirements differ.
CALs are required when SQL Server is licensed under the Server + CAL model. If the deployment uses an eligible core-based licensing model, separate SQL Server CALs are generally not required for each user or device. Always verify the licensing model for the exact SQL Server product you are purchasing.