Results 1 to 6 of 6
  1. #1
    Join Date
    Aug 2007
    Posts
    11

    what is a legacy key?

    what is a legacy key?

  2. #2
    Join Date
    May 2005
    Location
    San Antonio, Texas
    Posts
    134
    That most likely depends on what you were reading.

    My guess is that it is just a primary key for a table from a legacy system. You inherit a system that was already set up and have to work with the established tables. But thats my -guess-
    Vi veri veniversum vivus vici
    By the power of truth, I, a living man, have conquered the universe

  3. #3
    Join Date
    Jan 2007
    Location
    UK
    Posts
    11,434
    As amthomas mentioned - it depends on context.
    I think the answer has something to do with a legacy (no longer being supported?) system and it's licence key. Instead of changing the licence key for a piece of legacy software when you decide to build upon it's framework, you employ the use of a legacy key.

    But I too am just guessing
    George
    Home | Blog

  4. #4
    Join Date
    Aug 2007
    Posts
    11
    thanks guys. my context was a dimensional database. i have been told in this context it is the "natural key" i.e. what uniquely identifies the table.

    not sure if that is right or not, but thats how we are using it!

  5. #5
    Join Date
    May 2005
    Location
    San Antonio, Texas
    Posts
    134
    I don't know what dimensional database is.. maybe someone else will

    If the 'legacy' key is just the natural key then I would think that they just mean the key was chosen before and the system was established and it will not be changed.

    What is really important is that it is a natural key... attribute(s) that form a primary key and uniquely identify the row. You can read about that everywhere
    Vi veri veniversum vivus vici
    By the power of truth, I, a living man, have conquered the universe

  6. #6
    Join Date
    Aug 2007
    Posts
    11
    Thanks Very Much

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •