{"type":"rich","version":"1.0","title":"Algebra relazionale","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/Y3XxoWqS3BdYzBwi/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/6375f1a16a92dc1758cc1c22\" frameborder=\"0\" allowfullscreen></iframe>"}