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Explain the benefit of OOM. Main benefits of object oriented modeling are development of system become fast, quality of the system get improve. It gives freedom of use of alrea
What is object containment? References among objects can be used to model dissimilar real-world concepts.
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
Aggregation : One limitation of the E-R diagram is that they do not permit representation of relationships between relationships. In such a case the relationship along with its ent
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
explain participation constraints with examples
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
Advantages And Drawbacks Of Ddbms There are various reasons for building distributed database systems, with sharing of data, reliability and availability, and speedup of query
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
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