Answer / zee

Built -in Strategies are already implemented, thats why
they are called built-in.
these can be modified, if required by modifying the
database.prm file

External Startegies are the ones which we can implement by
modifying the "database.prm" file as per the requirement.

Answer / sss

strategy is used to extract structural information about the
tables, joins ...

bo has 2 strategy
1. built-in -strategy
2. external- strategy

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