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Define the notation for classes and atrributes
The notation for class, attribute, and operations are shown below:
Figure: Class with attributes and operations
An interface is a set of operations which are used to specify a service of a class or a component.
Explain the Check Clause The CHECK clause is employed to at the end of a CREATE TABLE statement specify table constraints. This is known as table-based constraint because it ap
I need to Map an E-R diagram to a relational schema
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
4. Describe three ways to handle missing field values
Determine the language that needs a user to specify the data to be retrieved with no specifying exactly how to get it is Ans: Non-Procedural DML
The primary key is selected from the
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Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)
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