Answer / sap bw

4 types

1) info object :
where a field of transferstructure is assigned to an
infoobject of infosource this is called default assignment
2) constant:
fixed value is assigned to infoobjects of infosource
3) routine
which allows us to implement custom abap code for complex
transformations

4) formula
where a predefined tranformations can be used to fill
fields of infosource.

Answer / saravana

Transfer rule nothing but mapping source field to BW info-
objects. It is nothing to do with update rules.

Transfer rule/Transfer structure helps to map fields and
info-objects and to load data till PSA flat table.

In update rules we got: 1) Direct Assignment - mapping
without any modification, 2) Initial - for which data not
loaded for that info-object, 3) Constant - defining any
constant value to be updated to data target, 4) Formula -
applying formula like (+,-,*,/), 5) Routine - which allows
to built expert routine for the info-object and it doesn't
return any value, also surpasses if any start & end routine
used, 6) Read-Master data - which allows the info-object to
update data target with master data value.

Answer / dhalpathi

1,direct mapping,
2,constant,
3,routine,
4,formula

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