Posting from the Informix-list

- suppose you have a dynamical tree structure that requires each node to inherit the characteristics of its parents.... but you can also insert classes into the class hierarchy... family | | genus | | | specie | | subspecies the classes here can be easily created as data types which inherit directly from their parents... but the structure MUST allow to insert a class in between classes in the class hierarchy... i.e. inserting a sub-genus below a genus, that inherits from genus, this causes the species below to inherit from the sub-genus... It would mean a change in the data type's inheritance scheme and a change in the data stored in such tree structures in tables. can this be done with data types dinamically? I mean... my final user must have a non-sql interface that does this. ____roberto dircio palacios macedo__________________________________ __ | | /\\_\\__ | Interactive and | http://ict.udlap.mx/people/roberto \\/_/\\_\\ | Cooperative | tel:(22)292431 /\\_\\/_/ | Technologies Lab. | mail: roberto@mail.pue.udlap.mx \\/_/ ict | UDLA-P, Mexico. | __________|____________________|____________________________________