Answer / nazneen

A logical unit consisting of dialog steps, whose changes are written to the database in a single database LUW, is called SAP LUW.

SAP bundling techniques are:
1) Call function in Update task
2) Perform on Commit
3) Call function in Background task

Answer / vaidehi

one of the bundling technic is update bundling.
there are some disadvantages in LUW.to avoid that update
bundling concept is there.
EX:
imagine an application has 15 screens.here n/w trafic is
high btw application server and dbserver (whenever implicit
commit and explicit commit happens a network is maintained
btw app server and dbserver).since the screens are more it
happens so many times so the n/w trafic increases.
To avoid this n/w trafic we have to maintain a buffer in
application server.we have to maintain explicit logic to
create a buffer in app server.
with update bundling ,buffer can be maintain in application
server.But it is not preferable .by default sap follows LUW.
even LUW has disadvantages of n/w trafic,data will be safe
&secure in the database server.so it can only supports LUw
apart form its disadvantages.update bundling is not
preferable for big applications.

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