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- Aggregation is a concept in database design where the relationship between two entities is treated as a single entity. Here are some examples of aggregation:
- A center entity offering courses acts as a single entity in the relationship with another entity, such as a visitor1.
- A library and its books show aggregation, as books may exist somewhere apart from the library2.
- A teacher following a syllabus is another example of aggregation3.
- In a project, an employee may require machinery, creating a REQUIRE relationship between the "works for" relationship and the "machinery" entity4.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.In aggregation, the relation between two entities is treated as a single entity. In aggregation, relationship with its corresponding entities is aggregated into a higher level entity. For example: Center entity offers the Course entity act as a single entity in the relationship which is in a relationship with another entity visitor.www.javatpoint.com/dbms-aggregationAggregation is a specific form of association in which one class, the whole, contains a collection of other classes, the parts; here, however, the lifecycle of the parts does not depend upon the whole. For example, a library and books show aggregation, since books may exist somewhere apart from the library.www.geeksforgeeks.org/association-composition-a…An example of aggregation is the 'Teacher' entity following the 'syllabus' entity act as a single entity in the relationship. In simple words, aggregation is a process where the relation between two entities is treated as a single entity.www.w3schools.in/dbms/generalization-aggregationAggregation is an abstraction through which we can represent relationships as higher-level entity sets. For Example, an Employee working on a project may require some machinery. So, REQUIRE relationship is needed between the relationship WORKS_FOR and entity MACHINERY.www.geeksforgeeks.org/generalization-specializati… - People also ask
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Feb 28, 2024 · Aggregation is a concept wherein the connection between two entities is considered as one unified entity. It includes combining the relationships with their respective entities into a better-degree entity.
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Aug 29, 2022 · Aggregation in DBMS (Database Management System) is a process of combining two or more entities to form a more meaningful entity. Aggregation in a database management system helps to ensure that all the …
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Jun 15, 2021 · The SUM function exists in SQL as well, and is called an aggregate function. Aggregate functions do a particular task across database rows. For example, say you run a yearly fundraiser. You have a database of donors along with the amount they donated each year.
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