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ABOUT INTERFACES:

ABOUT INTERFACES:

In Oracle Apps Interfaces are generally tables, which act as a medium to transfer

the data from one module to another module or to transfer the data from legacy

system into Oracle Applications. There are 352 tables provided by the Oracle

Package. Each module has its own Interface Tables.

A typical path to transfer the data from Legacy System to Oracle Apps:

What is Interfacing?

It is the process of converting the records from one format to another format. The

main components of this interfacing are

Transfer Program Interface Table and

Import Program

A] Transfer Program:

If the source modules data are implemented in Oracle Applications then the

Transfer Programs are integrated with the Package. If the source modules are

implemented in external system (i.e. other than Oracle Applications) then we

have to develop our own Transfer Programs. Generally these Transfer Programs

are developed using PL/SQL, JAVA or SQL Loader.

What they do? It maps the columns of source table with the columns of Interface Tables. It performs Row Level and Column Level validations. It transfers the data from Source to the Interface Table.

B] Interface Tables:

The Interface tables basically have 4 types of columns.1. Mandatory Columns.2. Conditionally Required Columns.3. Optional Columns.4. Internal Processing Columns.

Mandatory Columns:

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These are the main columns which are required in the destination tables (i.e.

Oracle Application Module Tables). With the help of mandatory columns only the

Import Program will converts the records from source to destination.

Conditionally Required Columns:

The values for these columns are based on the values of Mandatory columns.

For Example:If you are converting foreign currency transactions to INR then it as

compulsory to provide conditionally required columns like Currency conversion

rate, Conversion Time and Conversion Date.

Optional Columns:

These are used when a client wanted to transfer some additional information

from source to destination. These are based on clients requirement.

Internal Processing Columns:

Status and Error Message columns are called Internal Processing Columns.

These are specific only to Interface Table. These columns are going to be used

by the Import Program to update the status and error message, if the record fails

its validation while importing from Interface Table to the Destination Table.

C] Import Program:

For all Interface Tables, Oracle Application Package is going to provide Import

Programs. These are generally registered with destination modules. These

Import Programs are designed using PL/SQL, JAVA, C, C++, etc.

What they do? It maps the columns of the Interface Table with one or more columns inthe destination table. It performs row level and column level validation. It imports the data from Interface Table to the Destination tables, if the

records validated successfully. It deletes all the successfully validated records from Interface Table. If the record fails its validation then the Import Program will update thestatus and error message columns of Interface Table.

Interface Vs. Application Program Interface (API):

Interfaces are used to transfer the data from legacy system to Oracle Application

system where as API is used to convert the data from one form to another form

with in the Oracle Application Module.

Read more: http://prasanthapps.blogspot.com/2011/06/about-interfaces.html#ixzz1tvIMMbYB

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