Start Routine Query

Hello, I have a query regarding start routine. I have some data in my internal table like this:

Material    Material group    Status

101                  AAA                 A

102                  BBG                S

so I have about 500 rows of data in this internal table ok.

I want to bring about 300 million records from a DSO and delete ALL the records except materials that match with this internal table list.

Can some body please give me the syntax for it to put in my start routine?

I know it is something like

DELETE ALL SOURCE_PACKAGE  then I do not know.

Please help.

Thanks.