http://emadibrahim.disqus.com/enTue, 29 Jul 2008 00:02:22 -0000http://www.emadibrahim.com/2008/07/10/database-schema-compare-upgrade/#comment-1601800<p>The Database comparison tools in DB Pro really aren't migrations. If you're looking for that, check out my post comparing some .NET Migrations here:<br><a href="http://flux88.com/NETDatabaseMigrationToolRoundup.aspx" rel="nofollow noopener" target="_blank" title="http://flux88.com/NETDatabaseMigrationToolRoundup.aspx">.NET Database Migration Tool Roundup</a></p><p>The Schema Comparison tool cannot help you when you are deploying a volatile change, such as adding a new NOT NULL column to a table that has existing data. You have to customize the script. It doesn't handle refactorings where you change the datatype of a column. Again you have to futz with the script.</p><p>Migrations capture the evolution of the database and applies these changes safely and in order.</p><p>Also I'd like to plug RedGate's SQL Compare, which is far better than DB Pro's Schema Comparison. It does cost money, but then again so does DB Pro.</p>Ben ScheirmanTue, 29 Jul 2008 00:02:22 -0000