JPA : No connection specified for the project
The "No connection specified for project. No database-specific validation will be performed" Eclipse Marker is related to JPA.
You can perform one of the following things to eliminate this marker:
1.Add the required datatools.
2.Disable the JPA validator on Project Properties
→ Validation
.
Right Click on the project > Properties > JPA. There you can define a connection (follow the wizard).