V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

JPLDIS
       Jet Propulsion Laboratory Display Information System


The Free On-line Dictionary of Computing (30 December 2018):

JPLDIS

   Jet Propulsion Laboratory Display Information System.  Query
   system for UNIVAC 1108 [or PDP's?] written in Fortran,
   based on Tymshare's "Retrieve".  Indirectly led to Vulcan
   which led to dBASE II.  Jack Hatfield, George Masters,
   W. Van Snyder, Jeb Long et al, JPL.