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.#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.
#question.what is mapping constraints and types?.
What are stand-alone procedures? Procedures that are not part of a package are called as stand-alone because they independently defined. A good example of a stand-alone procedu
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
What is persistency? Persistency ensures which data is stored and that after the object is no longer available (program stops running) the data will be available to other users
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
what is natural join?
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
Distributed query and transaction processing a. Construct a query around any one of the functional divisions you made in 4a such that if executed in the distributed design of 4
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