Reviews | Akshay achu (User)

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1 year, 7 months ago

CONCEPTS OF EER Some aspects of a database may be more aptly expressed by certain extensions to the basic E- R model. Extended E-R features: • Specialization ⚫ Generalization higher- and lower-level entity sets Attribute inheritance Aggregation SPECIALIZATION The process of designating subgroupings within an entity set is called specialization. An entity set may include subgroupings of entities that are distinct in some way from other entities in the set. . For instance, a subset of ent

Akshay achu Reviews

Akshay achu
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