ER Diagram for Social Networking Site Website Project
E-R diagram means Entity Relationship diagram. Entity means object of system, generally we refer entity as database table , the e-r diagram represent the relationship between each table of database. E-R diagram represent entity with attributes, attributes is a properties of entity. If we assume entity is a database table then all the columns of table are treat as attributes.
- Entities are represented by rectangles.
- Attributes are represented by ellipses.