How to send a flat file to application server ?

How to send a flat file to application server ?
in
3 types
1.to write in bound inteface
   in bdc > call transation

•   In call transation the data will processed immidetly.
•   In call transation   errors wil not handle
• For errors we have to use bdcmsgcoll .
• This is used for short data.

            >session method

• In session the data should not processed immidietly.when we have to process at that time it will process
• In session the Background jobs are created ,
• The errors will stored in log file.

2.to write lsmw(this for excat or straight forward data , at that time this is using)

3.Stranded program  :cg3z  this is direct file tranfer program.

The Differences bw Batch Input and Direct Inputs methods.

Here are few differences bw Batch Input and Direct Inputs methods.

Batch Input: Uses classical BDC approach, but doesn't required an ABAP program to be written to format the BDC DATA. The user has to format the data using predefined structures and store it in a flat file. Yet it is a slower updation method.

Direct Input: Works similar to Batch Input programs. The difference is, instead of processing screens they validate fields and directly load the data into tables using standard function modules. Much faster and suits for large volume of data.

hr abap

HR ABAP is differnt from abap ,this is time dependent data.

hr abap depends on the basically

1.Time dependent data
2.Historical data
3.Private and Confidential data.

abap details

ABAP (Advanced Business Application Programming, 
The sap developed 4 former  IBM Employees are started in the year of 1972 .

The SAP is developed R/3 package.
R- Real time data processing client  - server archicture