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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.
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
explain the steps for reduction of er model into relational model?
Having clause This clause is used for producing conditions on grouped information. Example: Find maximum salary and department number of those departments where maxim
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
how to implement mid square hashing?
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
About Attribute inheritance
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
What are the three data anomalies that are similarly to take place as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why n
Modular growth: In distributed environments, it is simple to expand. Latest sites can be added to the network without affecting the operations of other sites, as they are somewhat
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