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What is the use of integrity constraints? Integrity constraints make sure that changes made to the database by authorized users do not result in a loss of data consistency. The
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A database administrator''s responsibilities and data contents
Create Student DB and execute Insert query? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course
A student entity type has the following attributes,name..
Give an example of enforcement in Typing. You can understand the idea of enforcement as it makes sure objects of dissimilar classes may not be interchanged as below: Exampl
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
explain participation constraints with examples
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:
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