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What is relationship? Give examples
A relationship is an association between several entities.
Example: A depositor relationship associates a customer with every account that he/she has.
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
Explain the challenges before an E-business management.
What are uncommitted modifications? The immediate-modification technique permits database modifications to be output to the database whereas the transaction is still in the act
Discuss the mechanism to read data from and write to a disk? Disk read/write heads are mechanisms in which read data from or write data to disk drives. The heads have gone by
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
This assignment is worth 45% of your final grade for this module. Marks will be awarded as follows: Prototypes (wireframe and web based prototype) You are expected
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
What are the advantages of having an index structure? Ans: The index structures commonly provide secondary access paths, which offer alternative ways of accessing the reco
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
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