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In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
How does Tuple-oriented relational calculus vary from domain-oriented relational calculus? The tuple-oriented calculus uses a tuple variables i.e., variable whose only allowed
The following variant of the primary copy asynchronous-update replication protocol has been proposed for totally replicated systems. (a) A transaction executing at site A updat
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
How to use Oracle
Funky Festivals Specification Funky Festivals organise music festivals which take place at various venues throughout the UK. A venue needs to be booked before a Festival can t
Multi-Key File Organisation In this part, we will introduce two basic file Organisation schemes that permit records to be accessed by more than one key field, therefore, allowi
Question: This form represents one of a number used for each sailing of a range of boats. A passenger may go on many sailings and will have the same passenger number for each.
What are the function of DBA?
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