Program Execution wait untill data is filled in DSO table through process chain

Hi,

I have a requiremnt where  I need to trigger the process chain which is inserting the data into the DSO.I want to wait the further program execution untill the process chain gets completed.That mean it has to wait till the data is filled into the DSO.So that i can read the data from the DSO for my further process.

As i am new to ABAP developer  ,so please can anyone provide me how i can achieve is.

Thanks in Advance for the reply .