Editing Library (computing) (section)

===Object===

Although generally an obsolete technology today, an object library exposes resources for [[object-oriented programming]] (OOP) and a distributed object is a remote object library. Examples include: [[Component Object Model|COM]]/DCOM, [[System Object Model|SOM]]/DSOM, [[Distributed Objects Everywhere|DOE]], [[Portable Distributed Objects|PDO]] and various [[CORBA]]-based systems.

The object library technology was developed since as OOP became popular, it became apparent that OOP runtime binding required information than contemporary libraries did not provide. In addition to the names and entry points of the code located within, due to inheritance, OOP binding also requires a list of dependencies {{endash}} since the full definition of a method may be in different places. Further, this requires more than listing that one library requires the services of another. In OOP, the libraries themselves may not be known at [[compile time]], and vary from system to system.

The remote object technology was developed in parallel to support multi-tier programs with a [[user interface]] application running on a [[personal computer]] (PC) using services of a [[Mainframe computer|mainframe]] or [[minicomputer]] such as data storage and processing. For instance, a program on a PC would send messages to a minicomputer via [[remote procedure call]] (RPC) to retrieve relatively small samples from a relatively large dataset. In response, distrubuted object technology was developed.