How can I write to 4 different tables in database at the same time

Question

I have .mdb file which has 4 tables for each hardware, I have a labview main program which calls 4 sub programs for each hardware, all these 4 subprograms run parallely.
One might finish one test early or late by milli seconds or seconds, the data has to be written to database file which has 4 tables inside.
I am planning to open reference in main program and use the reference in sub programs, I will write to Table 1 for first sub program , table 2 for second sub program and so on,
My question is can we write into one database file having 4 tables parallely/simulataneously? If no why?

Answer 1

Try it.  It should work.  As long as you are opening the database once, and passing the reference around, I don't see how it would not work. 
You may run into troubles if two subvi's are trying to write simultaneously.  If so, use semiphores to lock out the action until done. 
Or you could use a producer consumer architecture where the producer would queue up the table name and data, and the consumer would write to the database.  The producer can be replicated in each subvi.  In other words, each subvi will contain its own enqueue code.  All subvi's and the consumer loop would have to run in parallel.
- tbob
Inventor of the WORM Global