Contents

• Background
  • What is a DDL?
  • The New DDL Data Model
  • The New DDL Specification
• DDL Definitions Describing Categories
  • CATEGORY
  • CATEGORY_EXAMPLES
  • CATEGORY_GROUP
  • CATEGORY_GROUP_LIST
  • A CATEGORY_GROUP_LIST Example
  • CATEGORY_METHODS
  • CATEGORY_KEY
  • SUB_CATEGORY
  • SUB_CATEGORY_EXAMPLES
  • SUB_CATEGORY_METHODS
• DDL Definitions Describing Data Items
  • ITEM
  • ITEM_ALIASES
  • ITEM_DEFAULT
  • ITEM_DEPENDENT
  • ITEM_DESCRIPTION
  • ITEM_ENUMERATION
  • ITEM_EXAMPLES
  • ITEM_LINKED
  • ITEM_METHODS
  • ITEM_RANGE
  • ITEM_RELATED
  • ITEM_STRUCTURE
  • ITEM_STRUCTURE_LIST
  • ITEM_SUB_CATEGORY
  • ITEM_TYPE
  • ITEM_TYPE_CONDITIONS
  • ITEM_TYPE_LIST
  • An Example of the ITEM_TYPE_LIST Category
  • ITEM_UNITS
  • ITEM_UNITS_CONVERSION
  • ITEM_UNITS_LIST
• DDL Definitions Describing Methods
  • METHOD_LIST
• DDL Definitions Describing Dictionaries and Data Blocks
  • DATABLOCK
  • DATABLOCK_METHODS
  • DICTIONARY
  • DICTIONARY_HISTORY
• References
• About this document ...