+The options described below for configuring the SSL public key
+infrastructure accept a special syntax for obtaining their
+configuration from the database. If any of these options is given
+\fBdb:\fItable\fB,\fIcolumn\fR as its argument, then the actual file
+name is read from the specified \fIcolumn\fR in \fItable\fR within the
+\fBovsdb\-server\fR database. The \fIcolumn\fR must have type string
+or set of strings. The first nonempty string in the table is taken as
+the file name. (This means that ordinarily there should be at most
+one row in \fItable\fR.)