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How external/conceptual mapping and conceptual /internal mapping is performed
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
Explain the EXISTS and UNIQUE functions of SQL. Give an example for each? EXISTS: The EXISTS function takes one parameter that is a SQL statement. If any records exist which
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
explain participation constraints with examples
3 assignments combined in 1
assignment
why are older data models are being replaced by new data models
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
What is meant by object identifiers? Object-oriented systems use an object identifier to recognize objects. Object identifiers are unique: that is every object has a single ide
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