relationalDatabaseSnapshotName   
  The name for your new database snapshot.
Constraints:
- Must contain from 2 to 255 alphanumeric characters, or hyphens. 
- The first and last character must be a letter or number. 
The name for your new database snapshot.
Constraints:
Must contain from 2 to 255 alphanumeric characters, or hyphens.
The first and last character must be a letter or number.