Data and ER Diagrams

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Data

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Raw facts and figures without context

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Information

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Data processed into a meaningful form

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ER Diagram

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Visual representation of an entity-relationship model

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Entity

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Object or concept with distinct existence in a database

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Attribute

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Property or characteristic of an entity

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Relationship

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Association between entities in an ER diagram

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Primary Key

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Unique identifier for an entity in a database

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Foreign Key

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Attribute that creates a link between two tables

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Example of Entity

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Student, Course, Teacher

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True/False: ER Diagrams are used for database design

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True