visual basic barcode Unidirectional Replication in .NET

Integrated Code128 in .NET Unidirectional Replication

But we have a problem. You can see in the aggregated data that some queries that are logically the same or follow the same pattern ended up in different groups. That s because they happened to be using different values in their lters. Only query strings that are completely identical were grouped together. As an aside, you wouldn t be facing this problem had you used stored procedures, each invoking an individual query or a very small number of queries. Remember that in such a case you would have traced the SP:Completed event class, and then you would have received aggregated data by the procedure. But that s not the case here. A simple but not very accurate way to deal with the problem is to extract a substring of the query strings and aggregate by that substring. Typically, the left portion of query strings that follow the same pattern is the same, while somewhere to the right you have the arguments that are used in the lter. You can apply trial and error, playing with the length of the substring that you will extract; with luck, the substring will be long enough to allow grouping queries following the same pattern together and small enough to distinguish queries of different patterns from each other. This approach, as you can see, is tricky and would not guarantee accurate results. Essentially, you pick a number that seems reasonable, close your eyes, and hope for the best. For example, the following query aggregates the trace data by a query pre x of 100 characters and generates the output shown in Table 4-3:

26

<Grid x:Name="LayoutRoot" Background="White"> <Grid.RowDefinitions> </Grid.RowDefinitions> <Grid.ColumnDefinitions> </Grid.ColumnDefinitions> <TextBlock Text="Register for a New Account" FontSize="20" FontWeight="Bold" Margin="5" Grid.ColumnSpan="2" /> <TextBlock Padding="5" Margin="5" Text="First Name" FontSize="12" Grid.Row="1" /> <TextBox Padding="5" Margin="5" FontSize="12" Grid.Column="1" Grid.Row="1" /> <TextBlock Padding="5" Margin="5" Text="Last Name" FontSize="12" Grid.Row="2" /> <TextBox Padding="5" Margin="5" FontSize="12" Grid.Column="1" Grid.Row="2" />

mnth -----------2007-12-01 2008-01-01 2008-02-01 2008-03-01 2008-04-01 2008-05-01 2008-06-01 2008-07-01 2008-08-01 2008-09-01 2008-10-01 2008-11-01 2008-12-01 2009-01-01 2009-02-01 qty ----------100 110 120 130 140 140 130 120 110 100 110 100 120 130 140 sgn ----------NULL 1 1 1 1 0 -1 -1 -1 -1 1 -1 1 1 1

Win9x/NT4 Registration Files The Win9x/NT4 Registration Files option also generates a .reg file, but one in an older format used by earlier versions of Windows. The principal difference between the two formats is that the current format uses Unicode and the older format does not. Use the Win9x/NT4 Registration

Monolog conversations were cut early in SQL Server 2005, but they will probably be included in a later release . Because a monolog can be implemented as a bunch of dialogs from one sending endpoint to a bunch of receiving endpoints, the dialog conversation is more important and was implemented first . Some aspects of conversations are common to both dialogs and monologs, whereas other aspects apply only to dialogs or only to monologs, so the Service Broker T-SQL statements include both DIALOG and CONVERSATION . Because SQL Server 2008 has only one type of conversation, this amounts to two words for the same thing, but because the differentiation will be necessary when monologs are implemented, both terms are used in the language . This usage might lead to some initial confusion, but in the long run, it will be necessary to make monologs work . The three distinguishing features of Service Broker conversations are the reliable, ordered, and asynchronous delivery of messages . Because these are key concepts, I ll explain them in some detail .

page_109