Er diagram tutorial for beginners ppta

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    Entity Relationship Diagrams. 2. Entity. “An entity is a business object that represents a group, or category of data.”1. Do we know a similar concept? 1) Stephens
    Learn how relationships between entities are defined and refined, and how such Learn how ERD components affect database design and implementation
    Why not just place all the information we want to store into a text file? One Hour: An Introduction to the Entity-Relationship (ER) model. The ER model is a (semi)Design Process; Modeling; Constraints; E-R Diagram; Design Issues; Weak Entity Sets Represented diagrammatically by an entity-relationship diagram:.
    Database Design 1. Yong Choi. School of Business. CSUB. Part # 2. 2. Study Objectives. Understand concepts of data modeling and its purpose; Learn how
    University Entity-Relationship Diagram. Entity. What is an Entity? Has its own identity that distinguishes it from other entities. Examples: Person: PROFESSOR
    Chapter 6: ER – Entity Relationship Diagram. Major components of ER diagram; Practices. Yan Huang – ER. 2. ER. 1976 proposed by Peter Chen; ER diagram
    ER Model Basics. Entity: Real-world object distinguishable from other objects. An entity is described using a set of attributes. Each attribute has a domain.
    A database `schema’ in the ER Model can be represented pictorially (ER An ER diagram can be mapped into a relational schema. 4. ER Model Basics.
    2007 by Prentice Hall. 2. 2. ERD (Entity Relationship Diagram). is modeling tool used to depict graphically a database design before it is actually implemented.

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