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Object database standards, persistence specifications, and physics data

Description: Designers of data systems for next-generation physics experiments face a bewildering array of potential paths. On the one hand, object data base technology is quite promising, and standardization efforts are underway in this arena. On another, lightweight object managers may offer greater potential for delivering the high performance needed from petabyte-scale data stores, and may allow more efficient tailoring to specific parallel and distributed environments, as well as to multilevel storage. Adding to the confusion is the evolution of persistence services specifications such as those promulgated by the Object Management Group (OMG). In this paper, we describe what we have learned in efforts to implement a physics data store using several of these technologies, including a lightweight object persistence manager aiming at plug-and-play with object databases, and a trial implementation of the OMG Persistent Data Services Direct Access protocol.
Date: December 31, 1995
Creator: Malon, D.M.; May, E.N.; Grossman, R.L.; Day, C.T. & Quarrie, D.R.
Partner: UNT Libraries Government Documents Department

Data analysis in an Object Request Broker environment

Description: Computing for the Next Millenium will require software interoperability in heterogeneous, increasingly object-oriented environments. The Common Object Request Broker Architecture (CORBA) is a software industry effort, under the aegis of the Object Management Group (OMG), to standardize mechanisms for software interaction among disparate applications written in a variety of languages and running on a variety of distributed platforms. In this paper, we describe some of the design and performance implications for software that must function in such a brokered environment in a standards-compliant way. We illustrate these implications with a physics data analysis example as a case study.
Date: December 31, 1995
Creator: Malon, D.M.; May, E.N.; Grossman, R.L.; Day, C.T. & Quarrie, D.R.
Partner: UNT Libraries Government Documents Department

CASES-97 : Diurnal variation of the fair-weather PBL.

Description: The CASES-97 dataset, supplemented by data from the surrounding area and from satellite, will enable us to isolate the effects of soil moisture on boundary layer evolution.Our initial approach will be to use the integrated dataset to determine (a) the factors that contribute to PBL growth, and (b) the factors that determine the wind, temperature, and wind profiles in the growing PBL. This process will help us to consolidate the dataset and tease out remaining inconsistencies. As soon as reasonable, we want to use the dataset in mesoscale numerical models, to test and refine our conclusions. Further detail on the CASES-97 field program can be found at the World Wide Web site at: http://www.mmm.ucar.edu/cases/cases.html.
Date: November 18, 1997
Creator: Coulter, R. L.; Grossman, R. L.; Hicks, B.; Horst, T.; Klazura, G.; LeMone, M. A. et al.
Partner: UNT Libraries Government Documents Department