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Shall i let the client use lock(-1) ???

 
Greenhorn
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Hi guys:
help on this, please, i could not make the decision whether to let the client lock the whole database or not:
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Any help would be grateful>
 
Ranch Hand
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If all the client is supposed to do is search for matching flights and book seats on a single flight then why would it need to lock the entire database?
 
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