delta methods

Hi,

can anyone clarify me some doubts on this.. i read Roberto's weblog still im confusing

<b>serialized V3 Update.</b>

This is a normal update method. here Doc data is collected in the order it was created &transfered into BW as a batch job. the transfer seq is same as the order in which the data was created in all scenarios.

<b>Direct delta</b>

In this Method, extraction data is transfered directly from the doc postings into the BW delta queue. The transfer seq is the same as the order in which the data was created.

<b>Queued delta</b>

In this Method, extraction data is transfered directly from the doc postings is collected in an extraction Queue, from which a periodic collective is used to transfer the data into the BW delta queue.

<b>In this method, whther the transfer seq is the same as the order or Not?</b>

<b>Unserialized V3 Updated</b>

This method is almost exactly identical to the serialized update method. the only diff is that the order of doc data in the BW delta queue does not hav tobe same as the order in which it was posted.

Correct me if i am wrong? pl's clarify me on this

here my ques is.. if im getting data from diff languages how these 4 methods are handling ?

what is Logical unit work(LUW)? how they are differ fro these 4 methods ?

Which method is efficient and why? how come we know that which method we hav to used?(queued,direct,unserial..)

Correct me if i am wrong? pl's clarify me on this..

pl's send me docs to linda.biw@gmail.com

Thanks in Adv

Linda