NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Such data migration is doable with the host language interface to Sybase being the most viable approach. Keep in mind, however, that one of the purposes behind the original development of CDF, which applies to some extent to netCDF, was to provide a vehicle for access and management of scientific data for which the relational model was inappropriate. For example, in applications at GSFC, Oracle has been used for the management of temporal, characteristic and inventory metadata, while the actual data are either in a raw (i.e., original) archive format or CDF. If the former, then translation tools for subsetting to CDF are provided. Integration is provided at the user interface level, above that of the data managers. Many years ago, we did experimentation with doing graphics from (meta)data in Oracle and conversion from data in Oracle to CDF, both through the HLI. The results were useful, but not efficient. In both cases, only point data were involved, so the inefficiences for a RDBMS for multidimensional grids was not relevant. Given newer hardware and RDBMS implementations, the results should be practical today, but probably only for point data not aggregate access to random blocks of multidimensional parameters. I don't know what the structure of the data that you have in Sybase might be, but the typical reasons data are put in Sybase or netCDF are fairly orthogonal to each other. I would be curious as to what you specifically might have in mind. Lloyd Treinish ------------------------------- Referenced Note --------------------------- Received: from unidata.ucar.edu by watson.ibm.com (IBM VM SMTP V2R2) with TCP; Mon, 10 Aug 1992 20:45:32 EDT Received: by unidata.ucar.edu id AA09898 (5.65c/IDA-1.4.4 for netcdfgroup-send); Mon, 10 Aug 1992 17:39:05 -0600 Received: from nettlerash.Berkeley.EDU by unidata.ucar.edu with SMTP id AA09894 (5.65c/IDA-1.4.4 for <netcdfgroup@xxxxxxxxxxxxxxxx>); Mon, 10 Aug 1992 17:39:03 -0600 Received: from hp850.mbari.org by nettlerash.berkeley.edu (5.64.1/1.34.6) id AA02506; Mon, 10 Aug 1992 16:38:34 -0700 Message-Id: <9208102338.AA02506@xxxxxxxxxxxxxxxxxxxxxxx> Received: by hp850.mbari.org (15.11/15.6) id AA04411; Mon, 10 Aug 1992 16:38:54 pdt Cc: scri@xxxxxxxxxxxxxxx (Rich Schramm) Mailer: Elm [revision: 66.25] Well asking for help building netCDF on hpux worked so well, now for the fun stuff... Has anyone out there had experience creating netCDF files from a database product (such as SYBASE) which responds to SQL. Im thinking about how I might make use of netCDF in querying our oceanographic database to get data into a variety of graphics packages. (ie pplus, matlab, ncar?, pvwave?). Rich Schramm
netcdfgroup
archives: