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- Aggregation in DBMS refers to combining related entities into a higher-level entity123. Here are some examples of aggregation:
- The 'Teacher' entity and the 'syllabus' entity act as a single entity in the relationship1.
- The 'Center' entity offers the 'Course' entity as a single entity in the relationship, which is in turn related to another entity, 'Visitor'2.
- Calculating the total sales revenue for a specific date range4.
- Finding the average salary of employees in a department5.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.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-aggregationIn 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-aggregationExample of Aggregation For Example, An employee working on a project requires some machinery. So, REQUIRE relationship is needed between the relationship WORKS_FOR and entity MACHINERY. By using aggregation, WORKS_FOR relationship with entities EMPLOYEE and PROJECT are aggregated into a single entity.www.geeksforgeeks.org/difference-between-specia…Examples of Aggregation in DBMS
- Output: Total Sales = $50,000
- Explanation: This query uses the SUM aggregation function to calculate the sum of the sales_amount column for the specified date range, providing the total sales revenue for January 2022.
www.upgrad.com/tutorials/software-engineering/db…Examples of aggregations include calculating the total number of sales for a specific product, the average salary of employees in a department, or the maximum temperature recorded in a given month.databasetown.com/aggregation-in-database/ - People also ask
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