You can control the way that the interface for Oracle BI EE is displayed to users by creating skins and styles.
While skins and styles are typically used to customize the look and feel of analyses and dashboards by providing logos, color schemes, fonts, table borders, and other elements, they can also be used to control the position and justification of various elements by including specialized style tags in the relevant style sheet (.
css) file.
You can check the directory skin location with a right click on a OBIEE dashboard page, select show source code and search "custom.css".

You can nest presentation folders in two ways.
1) You can enter a hyphen and a greater than sign in the description field of the table to achieve
the result.
2) Or, prefix the name of the presentation folder to be nested with a hyphen and a space and
place it after the folder in which it nests to achieve the same result as shown below.

Result

The Repository can be configured within the Enterprise Manager. See Note 1 below.
Note 1:Once you've locked the Oracle BI Domain, you would then use the same screen back in
Enterprise Manager to browse and select the RPD file, and then enter the password, twice.

NewImage Once you've entered these details you would then press the Apply button, to save the changes. At this point, the RPD gets a sequence number after it, and it's displayed as the current default online repository for the Oracle BI Domain.
Note2: An OBIEE 11g system (or "Oracle BI Domain") is generally managed through a combination of Oracle Enterprise Manager Fusion Middleware Control, part of the Enterprise Manager "family", or through WebLogic Server Scripting Tool (WLST) scripts. Each Fusion Middleware Control instance as shipped with OBIEE 11g controls a single Oracle BI Domain (DEV, or PROD for example), and is installed along with WebLogic Server Admin Console in the WebLogic Admin Server, one of the two JVMs (the other being the managed server) that gets installed by default with OBIEE 11g. The screenshot below shows Fusion Middleware Control showing the status of the BI Server, Presentation Server and other system components within the installation.

Sshot 2

You can nest presentation folders in two ways.
1) You can enter a hyphen and a greater than sign in the description field of the table to achieve
the result.
2) Or, prefix the name of the presentation folder to be nested with a hyphen and a space and
place it after the folder in which it nests to achieve the same result as shown below.

http://santoshbidw.files.wordpress.com/2011/09/image0011.png?w=500&h=195 Result

http://santoshbidw.files.wordpress.com/2011/09/image003.png?w=500&h=193

A data warehouse is a database used for reporting and data analysis. It is a central repository of data which is created by integrating data from multiple disparate sources. Data warehouses store current as well as historical data and are commonly used for creating trending reports for senior management reporting such as annual and quarterly comparisons.