Dotted Line Erd Meaning. Jul 20, 2020 · This is a spin-off of the question at How to repre

Jul 20, 2020 · This is a spin-off of the question at How to represent foreign key in an ER diagram? which is too vague about the needed notation. Example : The code below is for an Entity Relationship Diagram, specified by the erDiagram declaration. An optional relationship is represented by an empty circle. It uses various symbols and arrows to represent these relationships and their meanings. Oct 27, 2025 · Partial Key attributes are represented with dotted lines. The text makes the issue of strong or weak harder to remember by discussing the fact that entities can be strong or weak as well. See flowchart's symbols by specifics of process flow diagram symbols and May 15, 2025 · Explore cardinality symbols used in ER diagrams, cardinality types, and notations like Chen, Crow’s Foot, and UML to create effective ERDs. As the next figure shows, hovering on the address, city, and country table names sequentially causes the connection line (or lines) and related fields to change color. For the meaning of each color, see Table 9. The Chen's ERD notation is still used and is considered to present a more Learn about the symbols and notations used in ER diagrams, a visual representation of the relationships between entities in a database. rfdckvn
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