Finish DB docs for Rackspace
diff --git a/rackspace/db/v1/backups/results.go b/rackspace/db/v1/backups/results.go
index 402fc86..b6a5f17 100644
--- a/rackspace/db/v1/backups/results.go
+++ b/rackspace/db/v1/backups/results.go
@@ -7,6 +7,19 @@
 	"github.com/rackspace/gophercloud/rackspace/db/v1/datastores"
 )
 
+// Status represents the various states a Backup can be in.
+type Status string
+
+// Enum types for the status.
+const (
+	StatusNew          Status = "NEW"
+	StatusBuilding     Status = "BUILDING"
+	StatusCompleted    Status = "COMPLETED"
+	StatusFailed       Status = "FAILED"
+	StatusDeleteFailed Status = "DELETE_FAILED"
+)
+
+// Backup represents a Backup API resource.
 type Backup struct {
 	Description string
 	ID          string
@@ -15,24 +28,32 @@
 	Name        string
 	ParentID    string `json:"parent_id" mapstructure:"parent_id"`
 	Size        float64
-	Status      string
+	Status      Status
 	Created     string
 	Updated     string
 	Datastore   datastores.DatastorePartial
 }
 
+// CreateResult represents the result of a create operation.
 type CreateResult struct {
 	commonResult
 }
 
+// GetResult represents the result of a get operation.
 type GetResult struct {
 	commonResult
 }
 
+// DeleteResult represents the result of a delete operation.
+type DeleteResult struct {
+	gophercloud.ErrResult
+}
+
 type commonResult struct {
 	gophercloud.Result
 }
 
+// Extract will retrieve a Backup struct from an operation's result.
 func (r commonResult) Extract() (*Backup, error) {
 	if r.Err != nil {
 		return nil, r.Err
@@ -46,10 +67,7 @@
 	return &response.Backup, err
 }
 
-type DeleteResult struct {
-	gophercloud.ErrResult
-}
-
+// BackupPage represents a page of backups.
 type BackupPage struct {
 	pagination.SinglePageBase
 }
@@ -63,6 +81,7 @@
 	return len(is) == 0, nil
 }
 
+// ExtractBackups will retrieve a slice of Backup structs from a paginated collection.
 func ExtractBackups(page pagination.Page) ([]Backup, error) {
 	casted := page.(BackupPage).Body