Configuring an External Dictionary

If dictionary is configured using xml-file, than dictionary configuration has the following structure:


      <!-- Complex key configuration -->

      <!-- Source configuration -->

      <!-- Memory layout configuration -->

      <!-- Lifetime of dictionary in memory -->

Corresponding DDL-query has the following structure:

    ... -- attributes
PRIMARY KEY ... -- complex or single key configuration
SOURCE(...) -- Source configuration
LAYOUT(...) -- Memory layout configuration
LIFETIME(...) -- Lifetime of dictionary in memory
  • name – The identifier that can be used to access the dictionary. Use the characters [a-zA-Z0-9_\-].
  • source — Source of the dictionary.
  • layout — Dictionary layout in memory.
  • structure — Structure of the dictionary . A key and attributes that can be retrieved by this key.
  • lifetime — Frequency of dictionary updates.