How can we scroll two data blocks..?

HI,
Can any one please help if it is possible to scroll two data blocks at the same time? Like I got two blocks . One block 'Block1' has list of products .Its a multiple record block.The other is like a details block 'Block2'. It's also a multiple record block but it has got more than one record for each record in 'Block1'.So what I need is if the user scrolls through 'Block1' then the corresponding 'Block' should also be scrolled to corresponding detail records.
Iam not sure if its possible or not. So can any one please help me with this.
Thanks in advance,
Karlos

Agree,
what you are looking for is master-detail. If you have a realtionship defined in the database then Forms will automatically pick up this condition and set the relation. Just add each table as a block onto the canvas
Frank

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Need your inputs on the following problem statement...
Existing Functionality:
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How can we scroll two data blocks..?

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