ChartCraft
Open studio
ER Diagram Updated 8/23/2026

One-to-Many Relationship ER Diagram

Entity-relationship diagram showing one-to-many links between authors and posts, categories and posts, and posts and comments. It models a simple publishing database with four entities: AUTHOR, CATEGORY, POST, and COMMENT.

entity relationship diagramone-to-manydatabase schemapublishing systemblog data model
4 nodes 3 connections

How can I use this er diagram?

Download the One-to-Many Relationship ER Diagram as a PNG or SVG, or open it in the studio to edit your own copy. To draw a similar er diagram from a description, use the ER diagram generator; for notation and a step-by-step walkthrough, read how to make an ER diagram; and browse more ER diagram examples for related layouts.

Related diagrams

More examples with overlapping tags

ER Diagram 8/23/2026

Many-to-Many Relationship ER Diagram

ER diagram showing many-to-many relationships resolved with junction tables: STUDENT and COURSE through ENROLLMENT, COURSE and INSTRUCTOR through COURSE_INSTRUCTOR, and CLUB memberships through CLUB_MEMBERSHIP.

entity relationship diagrammany-to-many relationshipjunction tablestudent enrollmentcourse instructorclub membership
ER Diagram 8/23/2026

Weak Entity ER Diagram

ER diagram showing a weak entity model where DEPENDENT depends on EMPLOYEE for identification, alongside separate BUILDING and ROOM entities and an ORDER with ORDER_LINE relationship.

er diagramweak entityemployee dependentorder linebuilding room
ER Diagram 8/23/2026

Search Engine ER Diagram

Entity-relationship diagram for a search engine data model, showing websites and webpages, crawl jobs, keywords, index entries, links, users, search queries, and clicks. It maps how crawling, indexing, and user search activity connect.

entity relationshipsearch engineweb crawlingindexingsearch queriesdata model

Try the studio with your own description.

Type any system, process, or schema in plain English. ChartCraft will draw it in seconds.

Open Studio → More examples