Directory service for a computer network

Details Directory service for a computer network Directory service for a computer network

2004-08-04

2009-08-18

Yao, Kwang B (Department: 2416)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S254000

Reexamination Certificate

active

07577092

ABSTRACT:
A distributed directory service for an on-line services network comprises multiple, separate services, referred to as “Directory Service Providers,” running on respective groups of application servers. Each Directory Service Provider stores and provides access to a respective hierarchical directory structure, with nodes of the directory structures representing the various on-line services and other content entities which may be accessed by end users of the network. Junction point nodes are used to provide user-transparent links between the different directory structures, so that the directory structures appear to end users as a single, hierarchical directory. A common application program interface (API) is implemented by all Directory Service Providers, allowing client applications running on computers of end users to access the different directory structures using a common set of software methods. Data items that are shared by multiple nodes, such as icon bitmaps and sound files, are optionally stored by the Directory Service Providers within a shared database (separately from the nodes), and are accessed via special API methods. Various forms of node filtering, including language-based filtering and access rights filtering, are performed by the Directory Service Providers to determine which nodes to show to end users.

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