GORM5 + Spring Boot ignores ddl-auto hibernate directives (and injects foreign keys in any way) · Issue #9641 · grails/grails-core · GitHub
Spring SQL initialization + ddl-auto: create-drop OK on 2.4.x, failed on 2.5.x · Issue #27016 · spring-projects/spring-boot · GitHub
![Hibernate DDL Auto Sync Create | Update | Validate | Create Drop database | Easy Explanation - YouTube Hibernate DDL Auto Sync Create | Update | Validate | Create Drop database | Easy Explanation - YouTube](https://i.ytimg.com/vi/94DPIr4AUCg/sddefault.jpg)