Local Process Chain question

Dear Experts,

A small quick question. If you have a local process chain, does it just create a dependency or does it execute the local process chain?

We have a Master data process chain and another chain that loads transaction data. These 2 chains are different chains. Now what we want is to create a dependency. If I include the Master data as a local process chain, does it load the master data again?, which we don't want or just create a dependency saying that the transaction data starts only after the local chain status is complete?

Thank you.

Message was edited by: Visu Venkat