Fixes DB schema validation

src/Umbraco.Core/Persistence/SqlSyntax/ISqlSyntaxProvider.cs

@@ -53,6 +53,8 @@ namespace Umbraco.Core.Persistence.SqlSyntax
         string TruncateTable { get; }
         string CreateConstraint { get; }
         string DeleteConstraint { get; }
+
+        [Obsolete("This is never used, use the Format(ForeignKeyDefinition) instead")]
         string CreateForeignKeyConstraint { get; }
         string DeleteDefaultConstraint { get; }
         string FormatDateTime(DateTime date, bool includeTime = true);

src/Umbraco.Core/Persistence/SqlSyntax/SqlSyntaxProviderBase.cs

@@ -537,10 +537,11 @@ namespace Umbraco.Core.Persistence.SqlSyntax
 
         public virtual string CreateConstraint { get { return "ALTER TABLE {0} ADD CONSTRAINT {1} {2} ({3})"; } }
         public virtual string DeleteConstraint { get { return "ALTER TABLE {0} DROP CONSTRAINT {1}"; } }
+        
         public virtual string CreateForeignKeyConstraint { get { return "ALTER TABLE {0} ADD CONSTRAINT {1} FOREIGN KEY ({2}) REFERENCES {3} ({4}){5}{6}"; } }
 
         public virtual string ConvertIntegerToOrderableString { get { return "REPLACE(STR({0}, 8), SPACE(1), '0')"; } }
         public virtual string ConvertDateToOrderableString { get { return "CONVERT(nvarchar, {0}, 102)"; } }
         public virtual string ConvertDecimalToOrderableString { get { return "REPLACE(STR({0}, 20, 9), SPACE(1), '0')"; } }
     }
-}
+}