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What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
Do you have experts of the dbms
Scenario 1: Power goes out after the first instruction. What happens?
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Define Atom of domain relational calculus An atom has the outline 1 , x 2 , ... , x n > -> r , in which r stands for a relation on n attributes and x 1 , x 2 , ... , x n ar
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
Explain the B + tree? B + tree is a type of tree which denotes sorted data in a way that permits for efficient insertion, retrieval and removal of records, each of which is
What is the main difference between read-only and update methods? A read-only method does not affect the values of a variable in an object, whereas an update method may alter t
Illustrate how you can use QBE to perform logical AND and OR operation
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