Microsoft Corp. announced the release to manufacturing of Microsoft SQL Server 2008, the new version of the company's acclaimed data management and business intelligence platform.
SQL Server 2008 (code-named "Katmai") aims to make data management self-tuning, self organizing, and self maintaining with the development of SQL Server Always On technologies, to provide near-zero downtime.
SQL Server 2008 will also include support for structured and semi-structured data, including digital media formats for pictures, audio, video and other multimedia data. In current versions, such multimedia data can be stored as BLOBs (binary large objects), but they are generic bitstreams. Intrinsic awareness of multimedia data will allow specialized functions to be performed on them. According to Paul Flessner, senior Vice President, Server Applications, Microsoft Corp., SQL Server 2008 can be a data storage backend for different varieties of data: XML, email, time/calendar, file, document, spatial, etc as well as perform search, query, analysis, sharing, and synchronization across all data types.
Other new data types include specialized date and time types and a spatial data type for location-dependent data. Better support for unstructured and semi-structured data is provided using the FILESTREAM data type has been added, which can be used to reference any file stored on the file system. Structured data and metadata about the file is stored in SQL Server database, whereas the unstructured component is stored in the file system. Such files can be accessed both via Win32 file handling APIs as well as via SQL Server using T-SQL; doing the latter accesses the file data as a binary BLOB. Backing up and restoring the database backs up or restores the referenced files as well. SQL Server 2008 also natively supports hierarchical data, and included T-SQL constructs to directly deal with them, without using recursive queries.
Spatial data will be stored in two types. A "Flat Earth" (GEOMETRY or planar) data type represents geospatial data which has been projected from its native, spherical, coordinate system into a plane A "Round Earth" data type (GEOGRAPHY) uses an ellipsoidal model in which the Earth is defined as a single continuous entity which does not suffer from the singularities such as the international dateline, poles, or map projection zone "edges". Approximately 70 methods will be available when SQL Server "Katmai" ships to represent spatial operations for the Open Geospatial Consortium Simple Features for SQL, Version 1.1.
SQL Server includes better compression features, which also helps in improving scalability. It also includes Resource Governor that allows reserving resources for certain users or workflows. It will also include capabilities for transparent encryption of data as well as compression of backups. SQL Server Katmai will support the ADO.NET Entity Framework and the reporting tools, replication, and data definition will be build around the Entity Data Model. SQL Server Reporting Services will gain charting capabilities from the integration of the data visualization products from Dundas Data Visualization Inc., which was acquired by Microsoft.
On the management side, SQL Server 2008 will include the Declarative Management Framework which allows configuring policies and constraints, on the entire database or certain tables, declaratively. The version of SQL Server Management Studio included with SQL Server 2008 supports IntelliSense for SQL queries. However, with the current CTP, it is limited to SELECT queries; it will be expanded to other T-SQL constructs over later releases. SQL Server 2008 will also make the databases available via Windows PowerShell providers and management functionality available as Cmdlets, so that the server and all the running instances can be managed from Windows PowerShell.
SQL Server 2008 is now available to MSDN and TechNet subscribers and will be available for evaluation download on Aug. 7, 2008. SQL Server 2008 Express and SQL Server Compact editions are available for free download today at http://www.microsoft.com/sqlserver.
As previously announced, pricing for SQL Server will not increase with SQL Server 2008.
More information is available at http://www.microsoft.com/presspass/presskits/sqlserver.
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