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How does the system cope up with a record crash when recovery is going on after the first crash?
Ans: In a system the undo and redo operations are needed to be idempotent to cope up with a record crash while recovery is going on after the crash. Because of the idempotent property, recovery process, whereas in the process of undoing or redoing the actions of a transaction, may fail without a trace, and this kind of failure can take place any number of times before the recovery is done successfully.
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Provide Examples of different types of Time and Date formats. It's most common store dates using a dash (-) as a colon (:)and the delimiter as the time delimiter. The given fo
A use case diagram giving a pictorial overview of user requirements and brief use case descriptions. As the case study contains only an outline of a business scenario, you will als
What are the various symbols used to draw an E-R diagram (any 3)?
A field-groups statement or an insert statement reverses storage space and transfers values. False.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
what is database management system? & why it is required?
You are working for the ABC Telecom and are given some customer records for data mining. You are asked to discover, from the data, patterns that characterize low-, medium- and high
Define the Immediate Update The immediate update methods may apply changes to the database on disk before the transaction arrives a successful conclusion. Though, these change
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