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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 Index? An index is a physical structure having pointers to the data. Indices are created in an existing table to locate rows more quickly and efficiently. It is possibl
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
Question 1 What do you mean by database management system? Question 2 Write a note on Object-Oriented Model Question 3 Explain Sequential File Organization Question
I need help for my Uni assignments
what do you understand by enhanced entity-relationship
Describe in brief about DBMS ?
Which database object does not physically exist? A view database object does not physically exist.
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