• Components of a Hash file
    • A set of buckets (sectors)
    • Hash function : key value --> bucket
    • Hash directory: bucket --> sector
  • Operations
    • find, insert, delete are fast
      • compute hash function
      • lookup directory
      • fetch relevant sector
    • findnext, nearest neighbor are slow
      • no order among records
Hash

Última modificación: Thursday, 24 de November de 2005, 15:20