Database diagram support objects cannot be installed (SQL Server 2005/2008)

Solution for the following error in SQL Server 2005 or 2008

Database diagram support objects cannot be installed because this database does not have a valid owner. To continue, first use the Files page of the Database Properties dialog box or the ALTER AUTHORIZATION statement to set the database owner to a valid login, then add the database diagram support objects." 

iisapp Tool on windows server 2008

Following commmand is the alternative for IISAPP in windows 2008 server

%windir%\system32\inetsrv\appcmd.exe list WP

Comparing ListView with GridView,DataList and Repeater

The ListView control is a new data presentation control that was added to .Net 3.5 , you may wonder why its added to the framework , and what it provide .
I believe the ListView control was added to provide The following functionalities :

1. A very flexible and customizable layout.
   
2. A built in data paging support with the DataPager control.
   
3. support data grouping ( repeating items) .
4. Built in support for deleting,inserting,paging,sorting,and updating the data.

Now , to compare the ListView control with the dataList,GridView and repeater control , lets look at the table below

	Supported Funcationalities
Control	Paging	Data Grouping	Provide Flexible Layout	Update,Delete	Insert	Sorting
ListView	supported	supported	supported	supported	supported	supported
GridView	supported	Not supported	Not Supported	supported	Not Supported	supported
DataList	Not supported	supported	supported	Not supported	Not supported	Not supported
Repeater	Not supported	Not supported	supported	Not supported	Not supported	Not supported

The GridView : it supports paging but it doesn't provide a flexible layout , since its mainly used to display the data in a table based layout.And If we looked at data inserting , the Gridview doesn't have a built in support for inserting data( since it doesn't call the insert method of it underlying data source when you click on a button with a CommadName set to "Insert" ).
The DataList : it support data grouping ( through its RepeatColumns property) , but it doesn't have a built in support for paging,inserting ,deleting , updating the data. and if you looked at its laout , you will find that by default  the datalist renders as html table and you will have to set its flowLayout to "Flow" to stop that behaviour.
The Repeater control : you will find that it provides a flexible layout but it doesn't support data grouping ,inserting,deleting , updating  and paging through the data .

Summary :
The ListView control was added to provide a rich data control that can support all the required functionalities at the same time , so now you can easily display a fully customizable layout that supports Grouping,paging , inserting , deleting , updating and sorting the data.