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Define Deadlock recovery measures
To recover from deadlock, the cycle in the wait-for-graph should be broken. The common technique of doing this is to rollback one or more than one transactions in the cycles until the system shows no further deadlock situation. The choice of the transaction to be rolled back is relies on the following deadlock recovery measures:
Describe integrity constraints? Integrity Constraints - A database is just as excellent as the information stored in it, and a DBMS must therefore help avoid the entry of inc
Software failures : In such cases, a software error abruptly stops the implementation of the current transaction (or all transactions), therefore leading to losing the state of pr
What is meant by functional dependencies? Consider a relation schema R and α C R and β C R. The functional dependency α ->β holds on relational schema R if in any legal relati
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
how to prepare a data dictionary for online examination system for certified courses?
Determine the Objectives of object oriented design provide an overview of object oriented design; partitioning system to subsystems; describe how a software desig
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Discuss the differences among the candidate keys and the primary key of a relation. Give instance to describe your answer? A candidate key is one that can be used as primary ke
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
Describe the storage structure of indexed sequential files and their access method. Ans: Index offers a lookup capability to rapidly reach the vicinity of the desired record.
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