Multiple partitions fedora 14

[justme11]

After installing Fedora 14 and opting to overwrite the whole drive with the new operating system I think I see multiple partitions that I did not create. fdisk -l shows:

 Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0002929f
 
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     1026047      512000   83  Linux
/dev/sda2         1026048   234440703   116707328   83  Linux
 
Disk /dev/dm-0: 119.5 GB, 119506235392 bytes
255 heads, 63 sectors/track, 14529 cylinders, total 233410616 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
Disk /dev/dm-0 doesn't contain a valid partition table
 
Disk /dev/dm-1: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders, total 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
Disk /dev/dm-1 doesn't contain a valid partition table
 
Disk /dev/dm-2: 939 MB, 939524096 bytes
255 heads, 63 sectors/track, 114 cylinders, total 1835008 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
Disk /dev/dm-2 doesn't contain a valid partition table
 
Disk /dev/dm-3: 64.9 GB, 64860717056 bytes
255 heads, 63 sectors/track, 7885 cylinders, total 126681088 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000 
  

This might be a noob question but should there only be one partition?

[daark.child]

Linux usually installs on two or more partitions. This way, system data and user data are separate.