Transparent Data Encryption
Enable encryption of an entire database, data
files, or log files, without the need for application changes. Benefits of this
include: Search encrypted data using both range and fuzzy searches, search
secure data from unauthorized users, and data encryption without any required
changes in existing applications.
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Extensible Key Management
SQL Server 2005 provides a comprehensive solution
for encryption and key management. SQL Server 2008 delivers an excellent
solution to this growing need by supporting third-party key management and HSM
products.
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Auditing
Create and manage auditing via DDL, while
simplifying compliance by providing more comprehensive data auditing. This
enables organizations to answer common questions, such as, "What data was
retrieved?"
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Enhanced Database Mirroring
SQL Server 2008 builds on SQL Server 2005 by
providing a more reliable platform that has enhanced database mirroring,
including automatic page repair, improved performance, and enhanced
supportability.
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Automatic Recovery of Data Pages
SQL Server 2008 enables the principal and mirror
machines to transparently recover from 823/824 types of data page errors by
requesting a fresh copy of the suspect page from the mirroring partner
transparently to end users and applications.
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Log Stream Compression
Database mirroring requires data transmissions
between the participants of the mirroring implementations. With SQL Server
2008, compression of the outgoing log stream between the participants delivers
optimal performance and minimizes the network bandwidth used by database
mirroring.
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Resource Governor
Provide a consistent and predictable response to
end users with the introduction of Resource Governor, allowing organizations to
define resource limits and priorities for different workloads, which enable
concurrent workloads to provide consistent performance to their end users.
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Predictable Query Performance
Enable greater query performance stability and
predictability by providing functionality to lock down query plans, enabling
organizations to promote stable query plans across hardware server
replacements, server upgrades, and production deployments.
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Data Compression
Enable data to be stored more effectively, and reduce
the storage requirements for your data. Data compression also provides
significant performance improvements for large I/O bound workloads, like data
warehousing.
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Hot Add CPU
Dynamically scale a database on demand by allowing
CPU resources to be added to SQL Server 2008 on supported hardware platforms
without forcing any downtime on applications. Note that SQL Server already
supports the ability to add memory resources online.
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Policy-Based Management
Policy-Based Management is a policy-based system
for managing one or more instances of SQL Server 2008. Use this with SQL Server
Management Studio to create policies that manage entities on the server, such
as the instance of SQL Server, databases, and other SQL Server objects.
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Streamlined Installation
SQL Server 2008 introduces significant improvements
to the service life cycle for SQL Server through the re-engineering of the
installation, setup, and configuration architecture. These improvements
separate the installation of the physical bits on the hardware from the
configuration of the SQL Server software, enabling organizations and software
partners to provide recommended installation configurations.
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Performance Data Collection
Performance tuning and troubleshooting are
time-consuming tasks for the administrator. To provide actionable performance
insights to administrators, SQL Server 2008 includes more extensive performance
data collection, a new centralized data repository for storing performance
data, and new tools for reporting and monitoring.
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Language Integrated Query (LINQ)
Enable developers to issue queries against data,
using a managed programming language, such as C# or VB.NET, instead of SQL
statements. Enable seamless, strongly typed, set-oriented queries written in
.NET languages to run against ADO.NET (LINQ to SQL), ADO.NET DataSets (LINQ to
DataSets), the ADO.NET Entity Framework (LINQ to Entities), and to the Entity
Data Service Mapping provider. Use the new LINQ to SQL provider that enables
developers to use LINQ directly on SQL Server 2008 tables and columns.
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ADO.NET Data Services
The Object Services layer of ADO.NET enables the
materialization, change tracking, and persistence of data as CLR objects.
Developers using the ADO.NET framework can program against a database, using
CLR objects that are managed by ADO.NET. SQL Server 2008 introduces more
efficient, optimized support that improves performance and simplifies
development.
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DATE/TIME
SQL Server 2008 introduces new date and time data
types:
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DATE—A date-only type
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TIME—A time-only type
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DATETIMEOFFSET—A time-zone-aware datetime type
o
DATETIME2—A datetime type with larger fractional
seconds and year range than the existing DATETIME type
The new data types enable applications to have
separate data and time types while providing large data ranges or user defined
precision for time values.
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HIERARCHY ID
Enable database applications to model tree
structures in a more efficient way than currently possible. New system type HierarchyId
can store values that represent nodes in a hierarchy tree. This new type
will be implemented as a CLR UDT, and will expose several efficient and useful
built-in methods for creating and operating on hierarchy nodes with a flexible
programming model.
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FILESTREAM Data
Allow large binary data to be stored directly in an
NTFS file system, while preserving an integral part of the database and
maintaining transactional consistency. Enable the scale-out of large binary
data traditionally managed by the database to be stored outside the database on
more cost-effective storage without compromise.
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Integrated Full Text Search
Integrated Full Text Search makes the transition
between Text Search and relational data seamless, while enabling users to use
the Text Indexes to perform high-speed text searches on large text columns.
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Sparse Columns
NULL data consumes no physical space, providing a
highly efficient way of managing empty data in a database. For example, Sparse
Columns allows object models that typically have numerous null values to be
stored in a SQL Server 2005 database without experiencing large space costs.
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Large User-Defined Types
SQL Server 2008 eliminates the 8-KB limit for
User-Defined Types (UDTs), allowing users to dramatically expand the size of
their UDTs.
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Spatial Data Types
Build spatial capabilities into your applications
by using the support for spatial data.
o
Implement Round Earth solutions with the
geography data type. Use latitude and longitude coordinates to define areas on
the Earth's surface.
o
Implement Flat Earth solutions with the geometry
data type. Store polygons, points, and lines that are associated with projected
planar surfaces and naturally planar data, such as interior spaces.
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Backup Compression
Keeping disk-based backups online is expensive and
time-consuming. With SQL Server 2008 backup compression, less storage is
required to keep backups online, and backups run significantly faster since
less disk I/O is required.
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Partitioned Table Parallelism
Partitions enable organizations to manage large
growing tables more effectively by transparently breaking them into manageable
blocks of data. SQL Server 2008 builds on the advances of partitioning in SQL
Server 2005 by improving the performance on large partitioned tables.
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Star Join Query Optimizations
SQL Server 2008 provides improved query performance
for common data warehouse scenarios. Star Join Query optimizations reduce query
response time by recognizing data warehouse join patterns.
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Grouping Sets
Grouping Sets is an extension to the GROUP BY
clause that lets users define multiple groupings in the same query. Grouping
Sets produces a single result set that is equivalent to a UNION ALL of
differently grouped rows, making aggregation querying and reporting easier and
faster.
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Change Data Capture
With Change Data Capture, changes are captured and placed
in change tables. It captures complete content of changes, maintains
cross-table consistency, and even works across schema changes. This enables
organizations to integrate the latest information into the data warehouse.
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MERGE SQL Statement
With the introduction of the MERGE SQL Statement,
developers can more effectively handle common data warehousing scenarios, like
checking whether a row exists, and then executing an insert or update.
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SQL Server Integration Services (SSIS)
Pipeline Improvements
Data Integration packages can now scale more
effectively, making use of available resources and managing the largest
enterprise-scale workloads. The new design improves the scalability of runtime
into multiple processors.
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SQL Server Integration Services (SSIS)
Persistent Lookups
The need to perform lookups is one of the most
common ETL operations. This is especially prevalent in data warehousing, where
fact records need to use lookups to transform business keys to their
corresponding surrogates. SSIS increases the performance of lookups to support
the largest tables.
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Analysis Scale and Performance
SQL Server 2008 drives broader analysis with
enhanced analytical capabilities and with more complex computations and
aggregations. New cube design tools help users streamline the development of
the analysis infrastructure enabling them to build solutions for optimized
performance.
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Block Computations
Block Computations provides a significant
improvement in processing performance enabling users to increase the depth of their
hierarchies and complexity of the computations.
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Writeback
New MOLAP enabled writeback capabilities in SQL
Server 2008 Analysis Services removes the need to query ROLAP partitions. This
provides users with enhanced writeback scenarios from within analytical
applications without sacrificing the traditional OLAP performance.
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Enterprise Reporting Engine
Reports can easily be delivered throughout the
organization, both internally and externally, with simplified deployment and
configuration. This enables users to easily create and share reports of any
size and complexity.
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Internet Report Deployment
Customers and suppliers can effortlessly be reached
by deploying reports over the Internet.
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Manage Reporting Infrastructure
Increase supportability and the ability to control
server behaviour with memory management, infrastructure consolidation, and
easier configuration through a centralized store and API for all configuration
settings.
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Report Builder Enhancements
Easily build ad-hoc and author reports with any
structure through Report Designer.
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Forms Authentication Support
Support for Forms authentication enables users to
choose between Windows and Forms authentication.
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Report Server Application Embedding
Report Server application embedding enables the
URLs in reports and subscriptions to point back to front-end applications.
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Microsoft Office Integration
SQL Server 2008 provides new Word rendering that
enables users to consume reports directly from within Microsoft Office Word. In
addition, the existing Excel renderer has been greatly enhanced to accommodate
the support of features, like nested data regions, sub-reports, as well as
merged cell improvements. This lets users maintain layout fidelity and improves
the overall consumption of reports from Microsoft Office applications.
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Predictive Analysis
SQL Server Analysis Services continues to deliver
advanced data mining technologies. Better Time Series support extends
forecasting capabilities. Enhanced Mining Structures deliver more flexibility
to perform focused analysis through filtering as well as to deliver complete
information in reports beyond the scope of the mining model. New
cross-validation enables confirmation of both accuracy and stability for
results that you can trust. Furthermore, the new features delivered with SQL
Server 2008 Data Mining Add-ins for Office 2007 empower every user in the
organization with even more actionable insight at the desktop.
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