Database Directories

Directories, Directory Synchronization and Virtual Directories

INTRODUCTION Directory, directory synchronization and virtual directory technologies are essential building blocks for deployment of an identity management strategy. At a superficial level, each technology serves a similar purpose: to provide applications (or end users) with identity and group membership information for resources under management. These resources are most typically users, but c...

Secure Directories

This paper describes the mechanisms that are needed in order to provide a secure directory service based on the X.500 data model. A brief introduction to the X.500 data model is given followed by an overview of the Lightweight Directory Access Protocol. Security can be provided by three functions: an application level firewall, an authentication mechanism, and an access control scheme. A descri...

Digitizing Doctors: Methodologies for Creating a Database from Historical Directories of Physicians

Service Composition with Directories

This paper presents planning-based service composition algorithms that dynamically interact with a potentially large-scale directory of service advertisements in order to retrieve matching service advertisements on demand. We start with a simple algorithm for untyped services, similar to a STRIPS planner. This algorithm is refined in two steps, first to exploit type information, and second to s...

Mobility Support with Corba Directories

In the very near future, various aspects of mobility will play a major role in telecommunications. For the support of user and service mobility, the location-independent storage and retrieval of all kind of user-related information is essential. For this purpose, directories are the basic supporting technology. One of the most widely accepted standards for directories is LDAP. On the other hand...