Changes between Version 1 and Version 2 of Overview


Ignore:
Timestamp:
04/11/06 06:37:04 (13 years ago)
Author:
joe
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • Overview

    v1 v2  
    88== Goals and Objectives == 
    99 
    10 For a detailed explaination of the design influences for the VSO, 
     10For a detailed explanation of the design influences for the VSO, 
    1111please see  
    1212[http://virtualsolar.org/docs/VSO_strawman_20021125.pdf The Virtual Solar Observatory Design Proposal, 2002 November]. 
    13 Relevent excerpts are contained below. 
     13Relevant excerpts are contained below. 
    1414 
    1515=== Principal Features === 
     
    2424=== Original Prototype === 
    2525 
    26 The original VSO prototype, which is occassionally refered to as 
     26The original VSO prototype, which is occasionally referred to as 
    2727version 0.5, contained the following features: 
    2828 
     
    3737  * a central catalog, 
    3838  * grid computing 
    39   * any fetures that limit or restrict access to data or software (authentication). 
     39  * any features that limit or restrict access to data or software (authentication). 
    4040 
    4141Planned features for later implementation included the following: 
     
    4343  * catalog caching (to speed queries), 
    4444  * multiple instances of the VSO (to make the VSO truly virtual, it could run on local machines instead of on a small number of remote servers), and 
    45   * logging of searches (without identifyng the party who carried out the original search). 
     45  * logging of searches (without identifying the party who carried out the original search). 
    4646 
    4747This reference implementation imparted the following ideas into the 
     
    4949 
    5050 
    51   First, it is not a monolitic server with a database that stores 
     51  First, it is not a monolithic server with a database that stores 
    5252  metadata.  Instead, it is an agile, lightweight application program 
    5353  that accepts input (user queries) and provides output (data location 
     
    7979== VSO 0.6 == 
    8080 
    81 With VSO 0.6, the inidividual objects were simplified and attempts 
     81With VSO 0.6, the individual objects were simplified and attempts 
    8282were made so that each one could function autonomously.  The system 
    8383was modeled as additional objects, while still using the basic overall 
     
    9898The changes from 0.5 to 0.6 were refinements of the VSO architecture 
    9999to assist with later maintenance of the VSO.  In addition, the data 
    100 model signicantly changed with this revision.  The following additional 
     100model significantly changed with this revision.  The following additional 
    101101objectives were realized: 
    102102 
     
    124124data providers.  To maintain the virtual aspects of the system, 
    125125provisions have been made for multiple Central Server mirrors, and for 
    126 the possibilty of no Central Servers being available. 
     126the possibility of no Central Servers being available. 
    127127 
    128128VSO 0.7 was never released to the public, due to flaws in the 
     
    133133 
    134134To solve the logic errors present in 0.7, modifications were made to the 
    135 ordering mechanims within VSO.  The following changes were made: 
     135ordering mechanisms within VSO.  The following changes were made: 
    136136 
    137137  * Data Providers returned enough information for a User Interface to repeat the query, without having maintained records of what the original query was. 
     
    158158=== VSO 1.2 === 
    159159 
    160 The 1.2 release encorporated refinements suggested by the solar physics 
     160The 1.2 release incorporated refinements suggested by the solar physics 
    161161community, and attempted to make the overall system easier to maintain. 
    162162 
     
    182182  * provided a mechanism to pass arguments into the search form to pre-select items. 
    183183 
     184 
     185=== VSO 1.4 === 
     186 
     187The 1.4 release included modifcations to both the underlying core, and the web-based User Interface 
     188to enable scientists to more easily identify data sets of interest. 
     189 
     190The following modifications were made to to the VSO internals: 
     191 
     192  * Populated additional information in the VSO Registry, including 'detector' and 'filter', 
     193  * and patched a problem with incorrect typing of data returned from the API.  
     194 
     195Some modifications were made to the web-based User Interface, to allow 
     196users to select based on instruments or observatories, without knowing the specific 
     197data repository that maintained the data products.  Some cosmetic changes were 
     198made to unify the look and feel of the web-based User Interface and the online 
     199documentation for VSO. 
     200   
    184201 
    185202== What VSO isn't ==