ERD, also known as Entity Relationship Diagram, is a visual representation of different data to describe how they are related. The two notions for ERD are Chen’s and Crow’s. Chen uses rectangles and diamonds to show a relationship, and Crow uses rectangles to connect to another rectangle to show a relationship. There are three primary symbols for ERD: entity, attribute, and relationship. The entity uses nouns, Attribute uses adjectives or characteristics, and relationships use verbs. The three crow’s foot notation is 1:1, which is a “one-to-one relationship,” 1:m is “one to many,” is to many relationships, and last is m:m, a “many-to-many relationship” this help describe the characteristic of the relationship between two entities. I think the key thing of an ERD table is to label if you don’t label your boxes and lines, you might end up lost. Or make sure you’re using the right Chen’s or crowfoot notion for your ERD table.
Hello Montajim!! This is a very good explanation! I like how you incorporated a diagram and a picture as you also explain it in your writing, You made it seem easy to understand! Great job