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Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
Heap files (unordered file) Mostly these files are unordered files. It is the easiest and most basic type. These files having of randomly ordered records. The records will have
What is a block and a block number? A block is a contiguous sequence of sectors from a single track of one platter. Every request specifies the address on the disk to be refere
Explain Deadlock detection and recovery Deadlock Detection - A deadlock is said to take place when there is a circular chain of transaction, every waiting for the release of a
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
Inconsistent Analysis : The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of s
What exactly is the concept of Functional Dependencies? And how do we associate this concept with the logic of Super-keys, Candidate Keys, etc? Given Relation R(A,B,C,D,E) with de
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to
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