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 does it mean to be a weak entity? Give an illustration.
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- what can be very interesting about the Entity-Relationship (ER) Modeling that people may forget about ( i am not talking about the main function or explication but just a concept/part that people tend to overlook when they study it for the first time?arrow_forwardplease solve all please as they related I will upvote your answerarrow_forwardThere are certain constraints imposed by selection structures in computer programming, notwithstanding their use. The same procedure must be followed in all cases, whether dealing with consumers, online clients, or other sorts of transactions. Is it true that various criteria apply to various occupations? So, why are these structures so special? There are certain constraints imposed by selection structures in computer programming, notwithstanding their use. The same procedure must be followed in all cases, whether dealing with consumers, online clients, or other sorts of transactions. Is it true that various criteria apply to various occupations? So, why are these structures so special? There are certain constraints imposed by selection structures in computer programming, notwithstanding their use. The same procedure must be followed in all cases, whether dealing with consumers, online clients, or other sorts of transactions. Is it true that various criteria apply to…arrow_forward
- Imagine two entities A and B, each of which has the property X (among other names not relevant to this topic) among other properties. Can the design improve without connecting the two Xs?arrow_forwardWhat really does the weak entity type mean? What's the formula? Give an example. What is meant by alternative specialisation?The ER graphic shows me in what way? Give an example, then draw a matching diagram.arrow_forwardTo determine if two objects in a class are equal, we should NOT use "==". We should override the _____ method of the Object class with our own definition of equality.arrow_forward
- What does the weak entity type actually mean? What's the secret? Give an instance What does alternative specialization mean?How am I shown on the ER diagram? Give an example and create a diagram to match it.arrow_forwardConsider two sets of entities A and B, each of which include the property X (among other names that are not important to this discussion) among other attributes. Is it possible to enhance the design if the two Xs are not connected?arrow_forward
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