+.IP
+Records in the Open vSwitch database are significant only when they
+can be reached directly or indirectly from the \fBOpen_vSwitch\fR
+table. Except for records in the \fBQoS\fR or \fBQueue\fR tables,
+records that are not reachable from the \fBOpen_vSwitch\fR table are
+automatically deleted from the database. This deletion happens
+immediately, without waiting for additional \fBovs\-vsctl\fR commands
+or other database activity. Thus, a \fBcreate\fR command must
+generally be accompanied by additional commands \fIwithin the same
+\fBovs\-vsctl\fI invocation\fR to add a chain of references to the
+newly created record from the top-level \fBOpen_vSwitch\fR record.
+The \fBEXAMPLES\fR section gives some examples that show how to do
+this.