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what is natural join?
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
3 assignments combined in 1
Control as a State Machine Engine First let us define the state machine: "the state machine is a machine which is an object but not an application object. It is a part of lang
Explain Thomas' Write rule. Show how it is different from timestamp ordering protol Ans: In timestamp-based concurrency control the thomas Write rule is a rule. Given a Timest
What is DAG? The class-subclass relationship is shown by a directed acyclic graph.eg: employees can be temporary or permanent. We might be create subclasses temporary \and perm
why shadow copy technique is used?
what is completeness constrent?
What is called mirroring? The simplest approach to introducing redundancy is to duplicate each disk. This method is called mirroring or shadowing.
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