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Explain I command in QBE ?
I : It is the command in QBE that is used to insert tuple (s) into the database
Write the C++ program having class name studentinfo, that is used to store the VU student information: This class should store your VUID, campus id, name and father name in the fol
Problem: (a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram. (b) List and briefly describe five potential benefits of the database approach comp
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
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
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
case study
why shadow copy technique is used?
Which product produces the relation that has attributes of R1 and R2 ? Cartesian product produce the relation which has attributes of R1 and R2
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