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Jul 3, 2024 · The Entity Relational Model is a model for identifying entities to be represented in the database and representation of how those entities are related. The ER data model specifies enterprise schema that represents the overall logical structure of a database graphically.
In ER modeling, the database structure is portrayed as a diagram called an entity-relationship diagram. For example, Suppose we design a school database. In this database, the student will be an entity with attributes like address, name, id, age, etc.
ER modeling is a top-down structure to database design that begins with identifying the important data called entities and relationships in combination with the data that must be characterized in the model.
Jun 28, 2024 · ER Model stands for Entity Relationship Model is a high-level conceptual data model diagram. ER model helps to systematically analyze data requirements to produce a well-designed database. The ER Model represents real-world entities and the relationships between them.
Jul 12, 2023 · The Extended Entity Relationship (EER) Model is essentially an extension providing more detailed designs catering to complex databases. Using Unified Modeling Language (UML), EER represents entities as class diagrams while associations between entities articulate relationships.
What is an Entity Relationship Diagram (ERD)? An Entity Relationship Diagram (ERD) is a type of diagram that lets you see how different entities (e.g. people, customers, or other objects) relate to each other in an application or a database.
The ER model defines the conceptual view of a database. It works around real-world entities and the associations among them. At view level, the ER model is considered a good option for designing databases.
