I need help understanding what strong or weak entities are, what is .pdf
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The document requests clarification on key database concepts such as strong and weak entities, single-valued and composite attributes, and identifying relationships. It also seeks guidance on understanding minimum and maximum pair relationships along with candidate keys for entities. Lastly, it includes instructions for analyzing an ER diagram by identifying entities, relationships, participation constraints, and candidate keys.
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I need help understanding what strong or weak entities are, what is .pdf
- 1. I need help understanding what strong or weak entities are, what is a single-valued attribute, what is a composite attribute, and what is an identifying relationship. Along with this, I need help understanding min/max pair relationships and what candidate keys are for these entities. Please help! i) Identify the name of one of the following on the ER diagram: ii) For each entity involved in a relationship, give the min/max pair & indicate the participation constraint: NOTE: There are 8 edges in the diagram linking an entity to a relationship. Identify each edge below by filling in the entity and relationship name, and indicate the (min, max) pair for that edge and whether it indicates total/partial participation. Row 1 is completed as a sample. Complete rows 28. iii) Give the candidate keys for each entity