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What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
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The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Increased overheads on update : On the drawbacks side, it will need the system to ensure that all replicas of a relation are consistent. This shows that all the replicas of the rel
give some example real life situation where DBMS are most suitable
how to data store?
The primary key is selected from the
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
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