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Insertion Anomaly: Inability to show certain information-The primary key of the over relation be (enrolment number, Cno). Any new tuple to be inserted in the relation should have
Exclusive lock It is asked for by a transaction on a data item that it wants to update. No other transaction can put either a shared lock or an exclusive lock on a dat
What is Thread splitting A thread of control is a path by which a set of state diagrams on that a single object is active at a time. Objects are shared between threads
What is known as heap file organization? In the heap file organization, any record can be placed anywhere in the file where there is space for the record. There is no ordering
explain ANSI SPARC architecture
Unrepeatable reads : Assume T7 reads X twice during its implementation. If it did not update X itself it could be very disturbing to see a dissimilar value of X in its next read. B
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Need 2 projects completed in 3NF format.
what benefit can a company gain by managing its own infrasture and services
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
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