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Which component is not included in database environment ?
A users component is not included in database environment.
Define the notation for classes and atrributes The notation for class, attribute, and operations are shown below: Figure: Class with attributes and operations A
What are the three data anomalies that are likely to occur as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why not? A
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
Run the following queries. For each query show 1) What you expect the output to be based upon the data 2) the SQL code and 3) the output running the query in Oracle. 1. Show all c
Question 1 Suppose the employee employee id, name, designation, salary, attendance and address of any employee has to be stored in a database. You can store these data in a sequen
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
what are the states of transaction?
what is Nested relational model? Explain with examples.
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