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  2. Many trivial entities: A DBMS may consist of many entities that are not significant enough to provide meaningful information. In such a case, the trivial entities can be combined into one complex entity through aggregation. For example, many trivial entities called rooms can be combined to form a single entity called hotel.

    prepinsta.com/dbms/aggregation/
    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.
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  3. People also ask
    What is DBMS aggregation?What is Dbms Aggregation in DBMS: Types, Example, Techniques and Importance: Aggregation can be defined as a procedure for combining multiple entities into a single one. In database management, it is a design system performed to model relationships between a group of entities and another relationship.
    What is aggregation in database management system?Aggregation is applied so that the idle entity or the entity which has not been used to obtain the desired results can work in relationship with any other such trivial entities in the database management system.
    Do DBMS need aggregation entities?One trivial entity: Aggregation is also needed if a DBMS has a single trivial entity that should be used for multiple operations. In this case, the trivial entity is used to form relationships with other entities. This may lead to many aggregation entities depending on the operations required.
    What is aggregation function in SQL?SQL aggregation function is used to perform the calculations on multiple rows of a single column of a table. It returns a single value. It is also used to summarize the data. 1. COUNT FUNCTION COUNT function is used to Count the number of rows in a database table. It can work on both numeric and non-numeric data types.
     
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