tailieunhanh - The Real MTCS SQL Server 2008 Exam 70/432 Prep Kit- P64

The Real MTCS SQL Server 2008 Exam 70/432 Prep Kit- P64: Congratulations on your journey to become certified in SQL Server 2008. This book will help prepare you for your exam and give you a practical view of working with SQL Server 2008. | Maintaining Your Database Chapter 7 297 Performing Ongoing Maintenance 0 SQL Server Agent is a service that can create multi step jobs notification alerts and notify operators by e-mail pager or NET SEND command. 0 SQL Server Agent service must be running for jobs and alerts to execute. It is also key to system functionality like replication Policy-Based Management and data collector. 0 The Database Maintenance Plan wizard allows sysadmins to create modify schedule and run customized maintenance plans. A Maintenance Plan is a sequence of ongoing maintenance tasks like rebuilding indexes validate databases and perform backup. 0 Policy-Based Management is a new feature of SQL Server 2008 that allows you to create and apply policies to multiple target servers or database objects. A policy consists of a set of conditions that must be met by the object for it to be compliant with the policy. Objects that do not comply with the policy are reported to you when the policy is evaluated. 0 Policies can be evaluated manually or automatically. This is known as on demand on change prevent on change log only and on schedule policy evaluation modes. These modes are used to check whether the target complies with the policy and possibly prevent a change that will cause the object to become noncompliant. The on change prevent and on change log only policies are enforced using recursive DDL triggers. The on schedule evaluation is performed using SQL Server Agent. Performance Data Collection 0 The Data Collector is a feature of SQL Server 2008 that allows you to systematically collect data from various sources and store it in a data warehouse. The Data Collector can be used to collect performance data but it is not limited to this use. The Data Collector uses SQL Agent jobs to collect data and SQL Agent must be running for the Data Collector to work. 0 SQL Server Reporting Services reports are created on collected data. Built-in reports are available or you can create custom reports.

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