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- Aggregation is an abstraction where the relationship between two entities is treated as a single entity12345. Here are some examples:
- A center entity offering courses is treated as a single entity in a relationship with another entity1.
- Sum or average values are examples of aggregated data2.
- An employee working on a project requiring machinery involves an aggregation relationship3.
- An employee object containing an address object is an example of aggregation4.
- Combining saving and current account types into a more generalized "Account" entity is another example5.
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-aggregationA simple example of an aggregate value is a sum or average. This aggregated data is used in analysis, reporting, dashboarding, and other data products to inform decision-making. Aggregating data can speed up time-to-insight, improve efficiency, and decision-making.coefficient.io/data-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…If a class have an entity reference, it is known as Aggregation. Aggregation represents HAS-A relationship. Consider a situation, Employee object contains many informations such as id, name, emailId etc. It contains one more object named address, which contains its own informations such as city, state, country, zipcode etc. as given below.www.javatpoint.com/aggregation-in-javaHence, entities are combined to form a more generalised entity, in other words, sub-classes are combined to form a super-class. For example, Saving and Current account types entities can be generalised and an entity with name Account can be created, which covers both.www.studytonight.com/dbms/generalization-and-sp… - People also ask
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WEBFeb 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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WEBNov 21, 2023 · In this article, we'll explore SQL aggregate functions, showcase real-world examples, and offer valuable insights on how to master them. Data aggregation is the process of taking several rows of …
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WEBAn SQL aggregate function calculates on a set of values and returns a single value. For example, the average function ( AVG) takes a list of values and returns the average. …
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WEBAggregation implies a relationship where the child can exist independently of the parent. Example: Class (parent) and Student (child). Delete the Class and the Students still …
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