TAILIEUCHUNG - Microsoft SQL Server 2008 R2 Unleashed- P55

Microsoft SQL Server 2008 R2 Unleashed- P55:SQL Server 2005 provided a number of significant new features and enhancements over what was available in SQL Server 2000. This is not too surprising considering there was a five-year gap between these major SQL Server 2008 is not as much of a quantum leap forward from SQL Server 2005 | 484 CHAPTER 17 Administering SQL Server 2008 with PowerShell Provider Using this PowerShell functionality a data store is presented to the user in a format similar to a file system. Some of the core cmdlets are typically used to do various tasks such as creating items like files and or folders. Snap-in PowerShell functionality can be extended with the use of snap-ins. They are basically DLL files written in a .NET programming language such as C or . DBAs can load these snap-ins in their PowerShell session to add additional functionality such as additional cmdlets and or providers. Tab completion This PowerShell functionality allows the user to press the Tab key to autocomplete supported commands and parameters. Aliases Theseare shorter names that can be used for cmdlets. For example some typical UNIX and DOS commands have had aliases for them created in PowerShell. These aliases map to the actual PowerShell cmdlet. Object-Based Functionality As mentioned earlier PowerShell is built on the .NET Framework. This implies that everything within PowerShell is object based. This is a familiar concept for anyone who is already familiar with the .NET Framework or .NET programming languages such as C or . This object-based functionality is an important concept to remember if you want to dive deeper into PowerShell. PowerShell provides many features and it can also use additional features provided by other .NET assemblies. SQL Server Management Objects SQL Server Management Objects SMO are a very useful tool to advanced users and developers when dealing with the automation of SQL Server 2005 and 2008. A lot of the features within SQL Server core engine agent mail and so on are packaged into easy-to-access .NET libraries that can be accessed from PowerShell. Most of the functionality provided by the new PowerShell support in SQL 2008 is based on SMO. As for SQL Server 2005 PowerShell can still be used to administer this version via SMO. The only difference is that

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