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Data slice explanation
Discuss The difference between drop table R and delete from R. DROP TABLE command deletes all the records with the table definition. This command will automatically committed
Describe the development process of Object oriented methods Object oriented methods have roots which are strongly anchored back in the 60s, functional and structured methods we
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
Describe the Composite Key Composite Key: Sometimes one key is not enough to uniquely recognize a row. E.g. in a single class Roll is enough to search a student, but in the w
Which method of access uses key transformation? A Hash method of access uses key transformation.
tell me the functionality,advantages and disadvantages of student database
sql is relationally complete-justify
Consider the subsequent relation Professor (Pfcode, dept, head, time) It is assumed that (i) A professor can work in much more than one
wh
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