In this graphic, pdb1_prod points toward pdb1_test_master. The arrow is labeled “Refreshable Clone.” The icon pdb1_test_master has a right-pointing arrow labeled “Automatic Snapshots.” The arrow points toward a ring of 8 PDBs, each one labeled with a different date: 4/2, 4/3, 4/4, 4/5, 4/6, 4/7, 4/8, and 4/9. The 4/5 PDB points down to pdb1_test_full. The arrow is labeled “Full Clone.” The pdb1_test_full1 PDB points down to 3 PDBs: pdb1_test_scopy1, pdb1_test_scopy2, and pdb1_test_scopy3. The arrow is labeled “Snapshot Copy.”