Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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What are the two requirements that an entity must meet in order to be classified as a weak entity?
Give an example of a weak or susceptible entity to illustrate your point.
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- What is the difference between a feeble entity set and a robust entity set?arrow_forwardWhat is NOT another name for an associative entity? Linking table Bridge entity Composite entity Strong entityarrow_forwardIn the ER-Model, what are the guidelines for properly recognizing entities and developing connections between them?arrow_forward
- Use an appropriate example to explain Entity Relationship Diagram.arrow_forwardSuppose that we wish to keep a genealogy. The information we wish to record about each person includes their name, date of birth, phone number, and degrees obtained . We also need to keep track of the mother, father, and children of each person. Draw a complete Entity-Relationship diagram. You must include all the details, sad as keys, weak entities (if any), cardinality constraints, etc. Your diagram must avoid redundancy.arrow_forwardIn the ER-Model, what are the guidelines for properly recognizing entities and developing connections between them?arrow_forward
- What exactly is the weak entity type? What is the key to it? Give an example what is an altrubute specialization?how ia represent on ER diagram? Give Example and draw corresponding diagramarrow_forwardHi there, Please see the attached document below and I am looking for Question 4 only. Please refer the attached document to answer the question. Thanks for your quick response in Adance as usuall. please find the attached question below. Bestarrow_forwardGive an explanation of what the Entity-Relationship model is as well as how it works?arrow_forward
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