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Difference between LEFT OUTER JOIN and RIGHT OUTER JOIN In left outer join tuples from the left-hand-side relation which do not match any tuple in the right-hand-side relation
Update or Modify operation alters the existing values. If these operations alter the value that is the foreign key also, the only check need is the similar as that of the Insert op
Benefits and Limitations od Data Models?
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
Consider the subsequent relations RENTER(rno, fname, lname, address, tel_no, pref_type, max_rent) VIEWING(rno, pno, date, comment) PROPERTY_FOR_RENT( pno, street, area ,city,
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
Assigning Responsibility for Operation Many operations might have obvious target objects, but some of these operations could be used at numerous places in an algorithm, by one
Define single valued and multivalued attributes. Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes. M
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