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Explain Derived and Non-Derived Attribute?
In few cases, two or more attribute values are related, for instance, Age and BirthDate attributes of a person. For specific person entity, the value of Age can be determined from the current date and the value of that person's BirthDate. Therefore, the attribute Age is known as derived attribute and the attribute BirthDate is known as non-derived or stored attribute.
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
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
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
What does Aggregation mean?
What is self-transition? If there is a transition which goes back to same state, it is known as "self- transition." With a trigger action exit action would be executed f
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
aggregation
This project requires you to create a database design. Your design will be documented in a set of Entity-Relationship diagrams. Draw a set of Entity-Relationship diagrams to mode
wh
What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
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