In the middle of this graphic is an cylinder icon representing a database. Four tiles, containing the letters A, B, C', and D appear horizontally in the middle of the icon. Underneath the C' tile is a C tile. The phrase "Active Version" appears above the cylinder, with four downward arrows, each pointing to one of the letters: A-D. Underneath the cylinder is an icon labeled "Snapshot 1." Four arrows point upwards from Snapshot 1. Each arrow points to a different letter: A, B, C, and D. To the right of the cylinder is the label "Data Blocks." To the left of the cylinder is a server computer icon, which is connected to it with a line.