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Oracle Academy

Oracle Academy. Arcs. Prof. Carmen Popescu Oracle Academy Lead Adjunct. Arcs Section 7 – Lesson 3. Arcs represent MUTUALLY EXCLUSIVE relationships.

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Oracle Academy

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  1. Oracle Academy Arcs Prof. Carmen Popescu Oracle Academy Lead Adjunct

  2. ArcsSection 7 – Lesson 3 • Arcs represent MUTUALLY EXCLUSIVE relationships • Fiecare elev poate merge FIE la scoala generala FIE la LICEU fie la SAM dar poate sa nu mearga la nici una din ele pt. ca relatiile pe care este pus arcul sunt optionale

  3. ArcsSection 7 – Lesson 3 • Fiecare elev TREBUIE sa mearga FIE la scoala generala FIE la liceu fie la SAM dar obligatoriu merge la una din ele pt. ca relatiile pe care este pus arcul sunt obligatorii

  4. ArcsSection 7 – Lesson 3 • Arcurile pot fi modelate utilizand subtipurile

  5. ArcsSection 7 – Lesson 3 • Arcurile pot fi modelate utilizand subtipurile

  6. ArcsSection 7 – Lesson 3 • Use supertypes/subtypes when you want to represent classifications or types of things. • Use arcs when you want to represent mutually exclusive relationships between entities.

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