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What three major types of actions includes databases? Briefly discuss these The three major types of actions including databases are: (i) Defining: It includes specifyin
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
Deadlock Prevention One of the easiest approaches for avoiding a deadlock would be to obtain all the locks at the begin of the transaction. Though, this approach restricts conc
how many types of data model in DBMS? explain data abstraction with its different level
What is multiple relationship ?
Which database object does not physically exist? A view database object does not physically exist.
Which is another name for weak entity? Child is another name of weak entity.
Probelm: a) In the context of OODBMS, define the following terms with appropriate examples. (i) Object class. (ii) Abstract class. (iii) Aggregation. (iv)
Define Deadlock prevention These protocols make sure that the system will never enter a deadlock state. There are two methods to deadlock prevention. One approach makes sure t
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
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