PartTransactionHistory Adapter or PartTran Adapter

Hi all,

I need to create a button that retrieves a lot number and places it into a text
box from the job number given in the textbox above it. We buy all material into
stock and then issue the material to a job. For collating the information in a
BAQ report I use the part tran table selecting the last row for a specified job
number where the lot number is present. What is the difference
between PartTransactionHistory Adapter or PartTran Adapter and which would be
the one to use. Is there some documentation available which gives information
about the adapters available.

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