Database EDR

Could you elaborate the meaning of the Regular Relationship Label? How to use them?

31271 Database Fundamentals ERD Book Notation Template Regular Relationship Label Ho +o +o Identifying Relationship Label O + -ot + + + O to Regular Entity to to Identifier Weak Entity Identifier Associative Entity Attribute Attribute + o OF + -ot # + ++ # Attribute Attribute ++ OR ++ Attribute Attribute o ++ Attribute KE Attribute Attribute O+ -ot + Attribute Relationships > Entities Attribute Attribute Attribute + OL ot >> Attribute Attribute ++ > # Instructions Copy elements to create your ERD. Add attributes by RIGHT-CLICKING an existing attribute, then select DUPLICATE. Submit your ERD by clicking FILE then EXPORT AS then PNG WARNING: Ed won't save your ERD Regularly click FILE then SAVE for an editable format student stu.id department dep id dep-name dep-Unitno dep-street stu-F-name - oc stu-L-name stu-street dep-postcode dep-postcode dep-phone-extension stu-city stu-state stu-dob stu-unitno facultyteachers-department stu-gender student course date s-date e-date 04 mark course faculty-members F-Mem-ID F-mem-F-name F-mem-L.name F-mem-street F F-mem-postcode F-mem-city F-mem-state F-mem-dob F-mem-unitno F- F-mem-gender co-id co-name teacher course s-date e-date faculty Fac ID fac-name