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Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Describe the Composite Key Composite Key: Sometimes one key is not enough to uniquely recognize a row. E.g. in a single class Roll is enough to search a student, but in the w
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
Question : (a) Differentiate between database integrity and database security (b) Database security involves measures to avoid loss of privacy and loss of confidentiality. D
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
Explain nested relations? Nested relations The assumption of INF is a natural one in the bank examples we have considered. However, not all applications are best modelled
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
Complete replication: It implies maintaining of a whole copy of the database at every site. Thus, the reliability & availability and performance for query response are maximized.
Design Of Distributed Databases: The distributed databases are mainly relational at local level. So a local database schema is the similar as that of a centralised database design
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