Here is the link to download sample database for oracle :
https://www.oracle.com/in/database/technologies/appdev/datamodeler-samples.html
https://www.oracle.com/database/technologies/spatial-graph-here-data-downloads.html
Here is the link to download sample database for oracle :
https://www.oracle.com/in/database/technologies/appdev/datamodeler-samples.html
https://www.oracle.com/database/technologies/spatial-graph-here-data-downloads.html