Here I'm setting the database using a applicationScope variable.

    <xp:this.data>
        <xp:dominoDocument var="document1" action="openDocument">
            <xp:this.databaseName><![CDATA[#{javascript:return applicationScope.get("DBSource")}]]></xp:this.databaseName>
            <xp:this.formName><![CDATA[#{javascript:return "XXXXXXX";}]]></xp:this.formName>
        </xp:dominoDocument>

applicationScope variable value is

applicationScope.DBSource = server + "!!" + dbpath;

so to define database source is <Server Name> +"!!" + <database path>

Hopefully this example answered your question

Bob

I think there´s no need to define a database data source. What kind of data do you want to get from?

As far as I know, data sources can be view or document. If your view(or doc) is in another base, you can reference it like this:

<xp:dominoDocument var="document1" databaseName="NameOfAnotherDatabase.nsf"
            formName="FormName">
        </xp:dominoDocument>

Now you can work with this datasource as if it were in your own database.

Hope that helps!

Thank you all for your quick response. Following is my requirement :

I have all my keyword documents in one central database in multiple views.

I could define multiple views as data source and get values based on a key. Is there any way to define DB as data source so that I do not have to define too many views as my data sources? The examples you have given were specific to document, I don't think I can get something like db(datasource).getView("vName") with the document data source ...

Please share your thoughts..

Do you need the Documents in this central keyword database?  Or just the values?

I'm not typical, but to my a central keyword database usually has things for looking up values for comboboxes and other pickers and stuff...

So a view might look like this:

Color

   White

   Black

   Red

Material

   Brick

   Wood

   Stone

Now if I want to access these VALUES I would not find to that db and view but have a SSJS function to go get them and return a list..

var results = getKeyWords(key:string) 

Something like that...  

If I wanted to really get the documents I'd still use a function and return a document collection or something to a repeat control maybe...  

So I guess it depends on what you want to do with the data in this central database.

http://naveegator.blogspot.com/2012/01/declaring-global-variable-in-xpage.html