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sy bcs project of hospital managment system
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
What are the differences among MySQL_fetch_array(), MySQL_fetch_object(), MySQL_fetch_row()? Mysql_fetch_object returns the result from the database like objects while mysql
write program
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
what is cascading? what is rollback cascading? please explain in detail
Use of partial data by applications : In common, applications work with views rather than whole relations. Thus, it may be more appropriate to work with subsets of relations rather
It can be easily defined as: The database must not have any unmatched foreign key values. The term "unmatched foreign key value" means a foreign key value for which there doe
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
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