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Lesson Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 515

using Microsoft.SqlServer.Server; public partial class StoredProcedures { [Microsoft.SqlServer.Server.SqlProcedure()] public static void SampleSP() { // start a transaction block using (TransactionScope tx = new TransactionScope()) { // connect to the context connection using (SqlConnection conn = new SqlConnection("context connection=true")) { conn.Open(); // do some changes to the local database } // connect to the remote database using (SqlConnection conn = new SqlConnection( "server=MyServer; database=AdventureWorks;" + "user id=MyUser; password=MyPassword")) { conn.Open(); // do some changes to the remote database } // mark the transaction as complete tx.Complete(); } } } } 'VB Imports Imports Imports Imports

The first and easiest part of failure diagnosis is figuring out that something has gone wrong with the server. The second and more difficult part of failure diagnosis is determining exactly what has gone wrong. Unless you know exactly what has gone wrong with the database or the server that hosts it, your chances of repairing the fault are not very good. In general, catastrophic failures are the easiest to diagnose. A server that fails to power on at all likely has blown its power supply. Intermittent faults can be the most difficult to diagnose. Some faults seem at first only to occur without rhyme or reason. It is only when you dive into the logs and know what to look for that identifying the exact cause of the problem becomes possible.

Lesson Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 515

Lesson 6: Creating Database Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516

Partial Public Class StoredProcedures <Microsoft.SqlServer.Server.SqlProcedure()> _ Public Shared Sub SampleSP() ' start a transaction block Using tx As New TransactionScope()

Synonyms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516

Exam objectives in this chapter:

' connect to the context connection Using conn As New SqlConnection("context connection=true") conn.Open() ' do some changes to the local database End Using ' connect to a remote server (don't hardcode the conn string in real code) Using conn As New SqlConnection("server=MyServer; database=AdventureWorks;" & _ "user id=MyUser; password=MyPassword") conn.Open() ' do some changes to the remote database End Using ' mark the transaction as completed tx.Complete() End Using End Sub End Class

Naming Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516

Coding Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 517