| 摘要 |
PURPOSE:To provide the destination designating method which can utilize a relation between each destination and a product of sets, a difference of sets, etc., and can designate more simply the destination. CONSTITUTION:To a set of an identifier (address) of a destination, a set of an address having a specific relation, and a set of the address having the specific relation, and a numerical value, a character-string, a symbol, etc., (item), an alias is given, respectively, and from the definition contents of the alias concerned, information required for its expansion is extracted and accumulated as an alias description 2 (alias defining part 1), and in the case the destination of a communication is described by syntax having descriptive force corresponding to a first floor predicate logical expression, the destination can be designated simply by obtaining a line of addresses by expanding it, while referring to the alias description 2. |
