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Why older data models are being replaced by new data modelling 100 words accepted#
What is deadlock? How can it be avoided? How can it be resolved once it occurs? Deadlock happens when two transactions are each waiting on a resource that the other transaction
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Which method is used to key transformation ? A hash method is used to key transformation.
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
What is Information System?
Consider the subsequent relation Professor (Pfcode, dept, head, time) It is assumed that (i) A professor can work in much more than one
it can be possible to create any table without primary key
What is Relational DBMS This is our subject of study. A DBMS is relational if the data is organized into relations, that is, tables. In RDBMS, all data are kept in the well-kno
define lock conversion
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