EXHIBIT 23.6
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
    We consent to the inclusion in this Registration Statement on Form S-4 of
our report dated April 1, 1998, on our audit of the statement of financial
position of IMS Health Incorporated as of March 31, 1998, which report is
included in Annex IV to this Registration Statement. We also consent to the
reference to our firm under the caption "Experts" in this Registration
Statement.
 
                                          COOPERS & LYBRAND L.L.P.
 
New York, New York
June 1, 1998