SAP database updations through Java program

Hi All,
From Java program, I want to access SAP database batch RFC
Please tell me which batch RFC's I have to use for read and update of a table.
Please also tell me how to find out a batch RFC for a particular table.Is there any way to find it out like BAPI.
What are the steps and settings ?
Detailed steps help the requirement.
Thanks,
Giri

Giri,
Ya...Java APP sents data to XI and XI needs to insert the data into the database.
Before the next round of data is sent by the Application, Xi should sent back info on the status of the records.
Is this what you want?
This will be like I have pointed earlier possible without a BPM. But, make the call from the sending application Synchronous. And then map the JDBC response to the calling aplication.
But this updation is only possible through XI.
If i got the requirement wrong can you let me know in more detail, what is it that you are trying?
Reward if solved

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