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What is a Data Flow Diagram? Data Flow Diagram: A data flow diagram is the graph that shows flow of data values from their sources in objects in the course of processes whic
Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
Explain TPS concurreny executions stating their advantages in online business advancement
What is conceptual model ? A conceptual model is a independent of both hardware and software.
Which database level is closest to the users? External database level is closest to the users.
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
In Database software have only pure security or some dis secured by administrator?
Consider the subsequent relations for a database which keeps track of business trips of salespersons in a sales office: SALESPERSON (SSN, Name, start_year, Dept_no) TRIP (SSN, Fr
What are two special events? The two special events are as "entry" and "exit". Any action which is marked as linked to entry event is executed whenever given state is entered v
Physical Database Design Issues The database design includes the process of logical design with the use of E-R diagram, normalisation, etc., followed by the physical design.
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