SQL Server 2005 (also known as SQL 9) was a significant release of Microsoft's flagship database management system. It was released in November 2005 and brought many new features and improvements over its predecessor, SQL Server 2000. Some of the key enhancements introduced in SQL Server 2005 include:1. Integration Services (SSIS): SQL Server 2005 introduced a new ETL (Extract, Transform, Load) tool called Integration Services that replaced Data Transformation Services (DTS) from previous versions. SSIS provided a powerful platform for building and managing data integration workflows.2. Reporting Services (SSRS): SQL Server 2005 included a new reporting tool called Reporting Services that allowed users to create, manage, and deliver interactive reports. SSRS provided a robust reporting solution with features like interactive sorting, drill-down capabilities, and customizable report layouts.3. Analysis Services (SSAS): SQL Server 2005 improved the capabilities of Analysis Services, the OLAP (Online Analytical Processing) tool. SSAS allowed users to analyze large volumes of data and create complex data models for business intelligence applications.4. T-SQL enhancements: SQL Server 2005 introduced several new T-SQL features and enhancements, including support for common table expressions (CTEs), ranking functions, and the APPLY operator. These enhancements made it easier for developers to write complex queries and manipulate data more efficiently.5. Database mirroring: SQL Server 2005 introduced the database mirroring feature, which allowed users to create high-availability solutions for their databases. Database mirroring provided a way to automatically failover to a standby server in case of a primary server failure.6. Security enhancements: SQL Server 2005 introduced several security enhancements, such as separated authentication and authorization mechanisms, improved auditing capabilities, and encryption features. These enhancements helped users to better protect their data and comply with regulatory requirements.7. CLR integration: SQL Server 2005 allowed users to write stored procedures, functions, and triggers using the Common Language Runtime (CLR). This feature enabled developers to write custom business logic in languages like C# or VB.NET and execute them within the database engine.Overall, SQL Server 2005 was a major milestone in the evolution of Microsoft's database management system. Its new features and enhancements made it a more powerful and versatile platform for building data-driven applications and managing enterprise databases.
