SQL Server 2008 New Features
To take advantage of new opportunities in today's fast-moving business world, companies need the ability to create and deploy data-driven solutions quickly. SQL Server 2008 reduces time and cost of management and development of applications.
2.1、Manage by policies
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.
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.
2.1.3、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.
2.2、Simplify application development
2.2.1、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.
2.2.2、ADO.NET Object 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.
2.3、Store any information
SQL Server 2008 introduces new date and time data types:
DATE—A date-only type
TIME—A time-only type
DATETIMEOFFSET—A time-zone-aware datetime type
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.
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.
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.
2.3.4、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.
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.
2.3.6、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.
2.3.7、Spatial Data Types
Build spatial capabilities into your applications by using the support for spatial data.
（A）Implement Round Earth solutions with the geography data type. Use latitude and longitude coordinates to define areas on the Earth's surface.
（B）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.
引用 3 楼 liangCK 的回复:看戏..看ranzj的.
引用 8 楼 ranzj 的回复:引用 3 楼 liangCK 的回复:
引用 10 楼 shuhua 的回复:太长了，专业，还是看不懂。