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compare the two log-based recovery schemes in terms of ease of implementation and overhead cost ans there are two types of log based
discuss some of the problems that are faced during maintenance of softwarethe problems are - often another person or group of persons working
prove that a relation which is 4nf must be bcnf ans let r be in 4nf suppose it is not in bcnf hence there exists an fd xrarry in r
why is maintenance of a software important the alteration of a software product after delivery to correct faults to improve performance or other
explain recovery process after system failure using checkpointans checkpoint scheme or method is an extra component of the log based recovery system
explain strict two-phase lockinga transaction t does not release any type of its exclusive x locks until that transaction commits or aborts in this
explain some of the limitations of testingthough testing is an significant part of system development and leads to a valid verified and efficient
differentiate between functional testing and structural testingfunctional testing also known as behavioural testing or black box testing in this
testing is a process of implementing a program with the intent of finding an errorvarious level of testing are unit testing
define software testingsoftware testing is a process used to help recognize the correctness completeness and superiority of developed computer
the database will enable college administrators the ability to track students initial major this will help college officials decide how best to
explain dynamic two-phase locking here a transaction locks a data item instantly earlier than any operation is applied on the data item after
explain the static or conservative two phase lockingstatic or conservative two phase locking in this type of scheme all the data items are locked
why is srs also known as the blackbox specification of system ans srs document is a contract among the development team and the customer once the
explain the concept of two-phase lockingit concerns the positions of locking and unlocking operations in each transaction in this protocol every
distinguish software faults and software failuresans in case of a failure the software does not do what the user expects a fault is a programming
what is meant by heuristic optimisationdiscuss the major heuristics that are applied during query
define software reliabilitysoftware reliability is the probability that software will give failure-free operation in a fixed environment for a fixed
how does the risk factor affect the spiral model of software developmentans risk analysis phase is the most significant part of spiral model in this
describe the effect of defining a prototype on the overall cost of the software projectthe prototyping model in this model a prototype an previous
what is the advantage of using prototype software development model instead of waterfall model the waterfall model this is the classic sdlc model
what are the three data anomalies that are similarly to take place as a result of data redundancy can data redundancy be completely eliminated in
define a software process how do software myths affect a software processsoftware process is a coherent set of activities for specifying designing
describe the storage structure of indexed sequential files and their access methodans index offers a lookup capability to rapidly reach the vicinity
what types of models are formed during software requirements analysis functional and