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What are the various states through which a transaction passes through in its lifetime? Briefly discuss all the events that causes transition from one state to another. Ans:
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
How external/conceptual mapping and conceptual /internal mapping is performed
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
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
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
I need to Map an E-R diagram to a relational schema
What is Nested Queries explain in details? Nested Queries - A SELECT query could have subquery(s) in it. While a SELECT query having another SELECT query in it, is known as n
What is Gathering information and Producing ERD Gathering information: This could be a written document that explains the system in question with reasonable quantity of detai
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
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