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Define the Immediate Update
The immediate update methods may apply changes to the database on disk before the transaction arrives a successful conclusion. Though, these changes are usually recorded in the log on disk by force writing previous to they are applied to the database, making recovery still possible.
The result of the UNION operation between R1 and R2 is a relation that includes? The result of the operation between R1 and R2 includes all the tuples of R1 and R2 which have c
(a) Why did SAP introduce the extended star schema?
Object-oriented decompositions Object-oriented decompositions of systems better are able to cope with change. Each subsystem has a well-defined interface which communicates with
Illustrate the Deployment Diagram A deployment diagram shows all nodes on network, their processor execution and interconnections. In a dynamic model, this is used to represen
Distributed Control and Data sharing: The geographical distribution of an organization can be showed in the distribution of the data; if a number of different sites are linked to e
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
What is the need of a log in a DBMS? Briefly describe the various types of records that are normally present in a log. Ans: The system log, which is generally writt
Explain Dynamic Two-Phase Locking Here a transaction locks a data item instantly earlier than any operation is applied on the data item. After finishing all the operations on
explain equi-join using illustration
sql is relationally complete-justify
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