Examlex
Which of the following notations in an E-R diagram means that the entity is optional and a relationship need not have an entity of that type?
Life-sustaining Procedures
Medical procedures that are performed with the aim of prolonging life by supporting or replacing essential bodily functions.
Purpose in Life
The sense of meaning and direction in one's life, often associated with personal fulfillment and happiness.
Fear of Death
The feeling of dread, anxiety, or apprehension about the possibility of dying or the process of dying.
Overall Process
The comprehensive series of actions or steps taken in order to achieve a particular end, encompassing all partial methods and procedures involved.
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