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The Basic 2PL:The basic two phase locking allows release of lock at any time after all the locks have been obtained. For instance, we can release the locks in schedule of Figure, after we have gone through the values of Y and Z in transaction 11, even before the display of the sum. This will increase the concurrency level. The basic 2PL is given graphically in Figure.
Your OS has a set of queues, each of which is protected by a lock. To enqueue or dequeue an item, a thread must hold the lock associated to the queue. You need to implement an a
how to implement mid square hashing?
What is NULL? Simply NULL means not in value.
what is Nested relational model? Explain with examples.
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What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
Use inheritance as an implementation technique when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one cla
I am going to develop a web site to present decision tree structure. For this, I want a web application with AJAX technology to connect the database and prepare the decision tree's
A student entity type has the following attributes,name..
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