Compare SQL Server to MySQL
Microsoft SQL Server 2008 outperforms MySQL as a database platform in all business-critical areas. It provides a large resource network, industry-leading performance and enterprise-ready scalability, the highest level of security, the highest availability, a comprehensive Business Intelligence (BI) platform—all at a low total cost of ownership (TCO).
SQL Server provides:
Reliability: Rich security features protect data and network resources.
Third-party evaluation, the preferred method of security verification: Microsoft is committed to Common Criteria as a proven and accepted verification process. MySQL does not include Common Criteria certification or C2(NSA).
Confidentiality: SQL Server clustering supports Kerberos authentication on a virtual server and Windows-style policies on standard logons. This allows for a consistent policy across all accounts in the domain.
Integrity:SQL Server supports encryption capabilities within the database and is integrated with key management infrastructure.
Automatic updates: SQL Server is integrated with Microsoft Update for security updates. MySQL has no automatic update patching.