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What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
how to make an e r diagram?
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
Define Deadlock prevention These protocols make sure that the system will never enter a deadlock state. There are two methods to deadlock prevention. One approach makes sure t
What is a Phantom Deadlock? In distributed deadlock detection, the delay in propagating local information might cause the deadlock detection algorithms to recognize deadlocks
define locking in simple language and decribed it
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
How to create a biological database based on viruses. How to decide which attribute should be there in the table and schema? How to identify the primary keys, foreign keys, 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
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
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