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POThe need for the synchronized function when doing write operation to DBMS
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2011-06-29T06:25:52.053
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In the common DBMS, the read/write operation has been implemented the Lock-system implicitly so that programmer does not necessarily handle this complex locking mechanism. But why when we write code on the application level, it is common that we still need to use some lock/synchronized function when doing write. e.g. <blockquote> public synchronized writetoDBMS(){ SQL statement writing to DBMS } </blockquote>
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The need for the synchronized function when doing write operation to DBMS
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1. COConsider using database transactions. `synchronized` is merely an advisory lock *upon a particular object*; the database is an external resource and not necessarily bound to the scope of the `synchronized`. They do different things but, the question isn't very "clear" as to what needs to be done or protected.
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2. COyes it is due to the fact that most of the applications are multi-threaded and most of the threads concurrently updating, inserting deleting records, if you want to manage in your application to manage this behavior, you will write such code to ensure that e.g. two update statements should not execute at the same time, therefore you manually write such code but in my opinion you can use the logic posted by @pst.
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 USAsad Rasheed

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