Aggregation, Generalization, specialization and association in hindi

Database Design and the ER model - PDF

Generalization Aggregation - Tutorialspoint

DBMS Specialization. It is opposite or inverse of generalization. A specialization is a top-down approach in which an entity of higher-level entity is broken down into two or more entities of lower level. In specialization, a higher-level entity set may not have any lower-level entity set. It is always applied to a single entity and results in ... Generalization Specialization and Aggregation in DBMS ... What is the need Generalisation Specialisation Aggregation With large databases it was realised that the ER model was become a little more complex and inconvenient to use. Thus by programmers there were some additions in the ER model were suggested to reduce down on the complexity of the program, some new concepts were added which […] Generalization, Specialization and Aggregation | Database ... Generalization, Specialization and Aggregation: Generalization and specialization are both abstraction mechanism used to hide Superfluous details of a set of objects. For example, when you say Maruti 800, then it is presumed that it is a car and you don’t specify vehicle type such as car, bus or truck. Generalization

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Aggregation is an abstraction through which relationships are treated as entities. Extended ER model. The Extended Entity Relationship Model (EER) include all the modeling concepts of the model and the Concepts of Specialization generalization, higher-level and lower-level entity set attributes inheritance and aggregation. Generalization Specialization and Aggregation in DBMS ... What is the need Generalisation Specialisation Aggregation With large databases it was realised that the ER model was become a little more complex and inconvenient to use. Thus by programmers there were some additions in the ER model were suggested to reduce down on the complexity of the program, some new concepts were added which […] What are the difference between generalization ... Generalization and specialization both are the designing procedures and both are equally important to design a schema. Which one to use depends on upon the requirement of a user. Key Differences Between Generalization and Specialization in DBMS 1.... Generalization Aggregation - W3schools