Database Management System Question
Database Management System Question With Answer & Solution
Que. - The primary key in the section relation is
Que. - The relation with primary key can be created using
Que. - How can the values in the relation teaches be deleted?
Que. - In the above teaches relation ” Select * from teaches where Year = ‘2010’” displays how many rows?
Que. - The relation changes can be got back using command
Que. - Let us consider phone_number ,which can take single or several values . Treating phone_numberas an permits instructors to have several phone numbers (including zero) associated with them.
Que. - The total participation by entities is represented in E-R diagram as
Que. - Given the basic ER and relational models, which of the following is INCORRECT?
Que. - Which of the following indicates the maximum number of entities that can be involved in a relationship?
Que. - In E-R diagram generalization is represented by
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