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Lesson Summary
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Recovery models let you control how the database engine logs operations and which restore options are available for a particular database. SQL Server provides three recovery models: Full, Simple, and Bulk-Logged. The Full recovery model is the default and the recommended recovery model, logging all operations and letting you recover to the point of failure.
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Lesson 3: Specifying a Recovery Model
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The Simple recovery model minimally logs most operations and doesn t let you back up or restore the transaction log. The Bulk-Logged recovery model minimally logs bulk operations and is intended for temporary use during large bulk operations. You configure a database s recovery model through the Database Properties window in SSMS or by using the ALTER DATABASE Transact-SQL statement.
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Lesson Review
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The following questions are intended to reinforce key information presented in this lesson. The questions are also available on the companion CD if you prefer to review them in electronic form.
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NOTE
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Answers
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Answers to these questions and explanations of why each answer choice is right or wrong are located in the Answers section at the end of the book.
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1. Which of the following sentences is true for recovery models A. In the Simple recovery model, most transactions are minimally logged. B. In the Full recovery model, most transactions are minimally logged. C. In the Bulk-Logged recovery model, all transactions are logged. D. In the Simple recovery model, all transactions are logged. 2. Which of the following methods let you change the database recovery model (Choose all that apply.) A. The sp_configure stored procedure B. Database properties in SSMS C. ALTER DATABASE D. CREATE DATABASE 3. Which of the following restore operations are NOT allowed in the Simple recovery model (Choose all that apply.) A. Point-in-Time Restore B. Differential C. Full D. Page Restore
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2
Configuring SQL Server 2005
Lesson 4: Configuring Server Security Principals
SQL Server 2005 provides a strong security model that helps you prevent unauthorized access to your important data resources. This model is based on permissions that you give principals the individuals, groups, and processes that can request SQL Server resources. SQL Server 2005 authenticates the permissions of all user connections, so all user connections must specify authentication mode and credentials. You can choose between two authentication modes Windows authentication and Mixed Mode authentication that control how application users connect to SQL Server. And you can create two types of SQL Server logins Windows logins and SQL Server logins that let you manage access to the SQL Server instance. To help manage the logins of principals that have administrative privileges to SQL Server, you can arrange these logins in fixed server roles. Authentication mode and logins are the first security level for SQL Server, so you should take care to configure the most secure option for your environment.
After this lesson, you will be able to:
Choose between authentication modes. Manage SQL Server logins. Manage fixed server roles.
Estimated lesson time: 10 minutes
Choosing Between Authentication Modes
SQL Server 2005 provides two modes for authenticating access to database resources: Windows authentication and Mixed Mode authentication.
Windows authentication When you configure SQL Server 2005 to use Windows authentication, only authenticated Windows users can gain access to the SQL Server instance. You need to add a Windows login for each Windows user or group that needs access to a SQL Server instance. This is the default and recommended authentication mode because you can take advantage of all the centralized security policies of your Active Directory domain. Mixed Mode authentication With Mixed Mode authentication, both Windows logins and SQL Server logins (neither of which are mapped to an operating system user) can access the SQL Server instance. You use Mixed Mode authentication when you need to provide access to non-Windows users for example, when users of another client operating system need access to SQL Server.
Lesson 4: Configuring Server Security Principals
You can change the authentication mode by using Server Properties in SSMS by taking the following steps: 1. In SSMS, right-click on your server and choose Properties. 2. Select the Security page. 3. Below Server Authentication, select the authentication mode you want to use on your server. You can select either the Windows authentication mode or the SQL Server And Windows authentication mode. 4. Click OK to save your changes. 5. Click OK to close the message box stating that your changes will not take effect until you restart SQL Server. 6. To restart your server, right-click on your server in Object Explorer and choose Restart.
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