Let's jump into each the of new SQL Server 2008 product categories, features and provide references to some of these technologies as additional points of reference.
- Security and Data Auditing
- Transparent Data Encryption - This is encrypting the data while it is on disk and remains transparent to applications
- External Key Management - This new functionality relates to consolidation of key management and integration with external products
- Data Auditing - This is one core feature of SQL Server 2008 that will include a number of new features to include:
- The introduction of first class 'AUDIT' objects
- Auditing DDL (data definition language) commands
- Support for multiple logging targets
- Additional information - http://www.microsoft.com/sql/prodinfo/futureversion/datamanage/default.mspx
- Availability and Reliability
- CPUs - Support for pluggable CPUs which means that a CPU can be added on the fly and recognized by SQL Server 2008 just like memory in SQL Server 2005
- Database Mirroring - Enhanced Database Mirroring to include compression of mirror streams, enhanced performance and automatic page-level repair for the principal and mirror
- Performance
- Data Compression - This new feature provides the ability to easily enable or disable data compression as an online command as well as offer more efficient data storage above and beyond traditional data compression
- Backup Stream Compression - The ability to configure compression with server level control or backup statement control of all backup types (full, differential, transaction log)
- Performance Data Collection - When you are experiencing a performance issue the biggest problem is pinpointing the problem, so with SQL Server 2008 Microsoft is introducing a single common framework for performance related data collection, reporting, and warehousing
- Improved Plan Guide Support - With SQL Server 2008 plans can be frozen for permanent query usage as well as pull plans directly from plan cache with SQL Server Management Studio integration
- Resource Governor - If you have had the need to segment your SQL Server resource utilization then you should be looking forward to SQL Server 2008 because you will have the opportunity to create pools and groups to segment the resources and govern them independently
- Management
- Policy-Based Management Framework - The ability to manage objects via policies as opposed to traditional scripts with inherent monitoring and enforcement
- Microsoft System Center - Integration with Microsoft System Center which a product from Microsoft to improve operational costs
- Extended Events - Another new feature is Extended Events which is a high performance yet light weight tracing infrastructure with insight into the core engine independent of SQL Trace
- New Data Types
- Date Time Data Type - The datetime data type will now be able to support the following:
- Precision to the 100th nanosecond which is 7 digits past second
- Time-zone datetime offset to translate the datetimes across numerous time zones
- Rather than having to parse the datatime for just the date or just the time, now SQL Server 2008 will have date only support as well as time only support
- HierarchyID - With the introduction of the HierarchyID data type this data type will be hierarchical-aware and will be accompanied by built-in functions, methods, etc. to support complex hierarchies in your data with .NET
- Date Time Data Type - The datetime data type will now be able to support the following:
- Development Enhancements
- Entity Data Model - With SQL Server 2008 will come the concept of a 'business entities' vs. tables, this will enable the ability to model more complex relationships as well as be able to retrieve entities as opposed to a result set of rows and columns
- LINQ- LINQ is a new .NET Framework that encompass language-integrated query, set, and transform operations
- SQL Server Change Tracking - This feature provides the ability to have change data capture without a comparable value
- Table Valued Parameters - Ability to create variables of a table value data type and be able to pass this variable into a stored procedure
- MERGE statement - Another term for this new feature is 'upsert'; this commands provides the ability to programmatically INSERT data if it does not exist or UPDATE the data if it does all in 1 set of logic
- Large UDT's - The 8000 byte limit is no longer applicable for on CLR-based UDTs and UDAs
- Spatial data - SQL Server 2008 will support GEOMETRY and GEOGRAPHY data types with built-in spatial function support and spatial indexes to support more GIS needs
- XML enhancements (support for lax validation, office 12 support, xs:dateTime support, lists/union types, LET FLOWR support, etc.)
- Service Broker
- Interface - A new user interface and tools will be released for working with Service Broker in order to add, drop or edit Service Broker objects directly in SQL Server Management Studio
- Conversation Priority - The ability to set message ordering with a send and receive impact with levels one to ten
- Data Storage
- Data Compression - Reference the Performance section above
- FILESTREAM Attribute - With this feature get the best of both worlds with functionality from BLOBs in the DB vs. BLOBs on filesystem
- Integrated Full Text Search - With SQL Server 2008 Full Text Search is fully integrated into the relational engine with no external storage, no external service as well as more efficient and reliable costing
- Sparse columns - SQL Server 2008 has more efficient storage for 'wide' tables with many columns that repeat and do not contain data
- New index types - New indexes include:
- Spatial indexes
- Hierarchical indexes
- FILTERED indexes (indexes on filtered values within columns)
- Data Warehousing/ETL
- Partitioned Table Parallelism - This feature eliminates the one thread limit per partition
- Star Join support - SQL Server 2008 now supports a star join with no special syntax which is completely optimizer based with full backward syntax support
- Data compression - Reference the Performance section above
- Resource Governor - Reference the Performance section above
- Persistent Lookups in SSIS - There is no longer a need for re-querying for lookup operators and cache lookups in multiple ways with the ability to persist lookups to disk
- Improved thread scheduling in SSIS - This is accomplished by a shared thread pool and pipeline parallelism
- SQL Server Change Tracking - Reference the Development Enhancements section above
- MERGE statement - The MERGE statement will add a great deal of value with slowly changing dimensions
- Scale-out analysis services - With read-only storage multiple Analysis Services SQL Servers can be leveraged
- Subspace computations
- New tools for cube design
- Best practice design alerting
- Backup cubes with better scalability
- Excel - Data-mining add-ins for Excel
- Reporting
- Reporting Services Deployment - IIS is no longer required to run Reporting Services
- Rich-text support
- Enhanced visualization graphing
- Word - Reports can be rendered to Microsoft Word
- Deprecation
- Many of the 'old' features are removed to include:
- 60, 65 and/or 70 compatibility modes
- NOLOG and/or TRUNCATEONLY for the BACKUP command
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