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Improved availability:The data in a distributed system may be replicated so that it is at more than one site. Thus, the failure of a node or a communication link does not necessarily make the data inaccessible. The skill of most of the systems to continue to operate despite the failure of one site results in enhanced availability which is vital for database systems used for real-time applications. For instance, loss of access to data in an airline might result in the loss of potential ticket buyers to competitors.
Briefly explain what is to be done during defining problem statement. To define Problem Statement of a system, define what is to be done and how you can go to implement that. Y
what is view?explain
growing phase and shrinking phase are disjoint, why ?
Different stages of DDLC ?
Evaluate, compare and contrast the two methods of relational database design namely top down method and Bottom up method. What will be your choice if you are asked to select a meth
How do you find the final model after iterative analysis? Why is iterative analysis of any of the problem needed? The final model serves as the base for system architectur
What are the parts of SQL language? The SQL language has various parts: data - definitition language Data manipulation language View definition Transaction contr
Define seek time. The time for repositioning the arm is known as the seek time and it enhances with the distance that the arm is known as the seek time.
sql is relationally complete-justify
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
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