For an overview, please see the ODB tutorial on the Tutorials page.
number columns( odb )
Returns a list of the names of the columns in the given ODB variable. If there are no columns, then nil is returned.
number count( odb )
Returns the number of rows contained in the ODB.
vector or list values( odb, string )
Returns the given column specified by its name. If the column type is number, a vector is returned; if it is string, then a list of strings is returned. If the column cannot be found, nil is returned.