Unified Modelling Language (UML) is often used as a notation when drawing Entity-Relationship Diagrams (ERDs) since it is a notation that software developers are already familiar with. What is the difference between a binary relationship and a unary relationship? Provide an example of each as part of your answer. Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation according to the below business rules. Your design should be at the logical level – include primary and foreign key fields and remember to remove any many-to-many relationships. Legal system – business rules: • In the legal system, a judge hears many cases throughout their career. • Each case can be heard by multiple judges in some circumstances. • A case has a date and title that needs to be recorded in the database. • The name and surname of each judge needs to be stored. • A judge can have multiple qualifications (with minimum of one), and each qualification is related to only one specific judge. • For a qualification, the institution, description and year completed should be recorded
Unified Modelling Language (UML) is often used as a notation when drawing Entity-Relationship
Diagrams (ERDs) since it is a notation that software developers are already familiar with.
What is the difference between a binary relationship and a unary relationship?
Provide an example of each as part of your answer.
Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language
(UML) notation according to the below business rules. Your design should be at
the logical level – include primary and foreign key fields and remember to
remove any many-to-many relationships.
Legal system – business rules:
• In the legal system, a judge hears many cases throughout their career.
• Each case can be heard by multiple judges in some circumstances.
• A case has a date and title that needs to be recorded in the
• The name and surname of each judge needs to be stored.
• A judge can have multiple qualifications (with minimum of one), and each
qualification is related to only one specific judge.
• For a qualification, the institution, description and year completed should
be recorded
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