What is integration processes and integration scenario?

Question

hi experts,
1.What is data type enhancements?
2. What is context objects?
3. what is External definitions?
4. What is mapping templates?
Please reply me as soon as possible.
thanx,
murali.

Answer 1

Hi,
A message defines how the message that the user receives is structured. The message template contains a URL to a BSP application (Business Server Page). This creates the messages. You can define separate BSP applications and specify them in the message template (see also: Changing the Message Layout).
When you assign a message template to a category, you can define your own message template for each level of granularity and delivery type (see also: Granularity of Messages). You can also use the same message template for different levels of granularity and delivery types.
Activities
1. To define your own message template, navigate to the Message Template screen:
a. In the toolbar, choose New Entries.
b. Enter the name of a message template.
c. Specify the relative URL for the required BSP application and the handler class.
2. On the Assigned Message Template screen, assign the message template to the required category.
You can assign your own message template for each delivery type and level of granularity.
a. In the Customer Namespace column, enter either Z or Y.
b. Select your message template.
The specified message template overrides the standard message template shipped by SAP.
2.Context object
Context objects are a simple alternative to XPath expressions for accessing the contents of a message.
Creating context object : http://help.sap.com/saphelp_nw04/helpdata/en/3f/9ddca372cbf146bdcdf54db7737623/content.htm
Activities
1. Create a context object on the design maintenance screen of the Integration Builder 2. Select a built-in XSD data type for your context object by using the Reference Type list box and save it.
3. Open the interface that you want to assign a context object to in the Integration Repository. You can only assign context objects to the request message of interfaces in the same or in a superordinate software component version.
4. To assign the context object to a request message field, enter it in the Context Object column by using the input help. For message interfaces, the structure of the request message is displayed on the Context Object tab page.
5. If you want to undo the assignment of a context object, select the name of the context object and choose Delete Context Object Assignment ( ).
6. Activate your changes.
3. External Definitions :
An external definition enables you to import a local WSDL, XSD, or DTD file to the Integration Repository and specify which parts of the schema to extract as the description for a message. You can use these extracted message schema as:
●     Output or input messages in message interfaces
●     Source or target structures for message mappings
http://help.sap.com/saphelp_nw04/helpdata/en/26/9e97b0f525d743882936c2d6f375c7/content.htm
I hope this has helped you.
Pls : Reward points if helpful.
Vishal