Persistent objects

ODMG

    - database extension -- unified type system

Object Definition Language

ODL

    - standard types objects and literals
  • references -- Ref \zline{\c{see} section smart}
  • collections -- List , Bag, Set

Object Manipulation Language

OML

  • create, delete, modify, reference

Object Query Language

OQL

  • oql(type& value,const char* query,...)

slide: The ODMG-93 standardization efforts