What is a derived (artificial) primary key
What is a derived (artificial) primary key? When must this be used?
Expert
Using a name like the primary key violates the principle of stability. The social security number may be a valid choice, other than a foreign employee may not have a social security number. It is a case where a derived, quite than a natural, primary key is suitable. A derived key is an artificial key which you create. A natural key is one which is already part of the database.
What is meant by the term business objects?
Describe the main three stages of transaction isolation supported by Oracle?
Explain the relationship between JDBC and Sybase.
Explain the way of establishing connection by ODBC.
Explain Data Page Locking in Sybase.
Illustrates the term normalization?
What are the main tasks of a Server?
Illustrates the term data sparsity and how this effect upon aggregation?
Sustainability: Cloud computing consumes very less energy and resources than a sophisticated IT infrastructure. It helps in better sustainability of the organization.
Explain what needs to happen to convert a relation to third normal form?
18,76,764
1942664 Asked
3,689
Active Tutors
1440917
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!