- LDAP is the Lightweight Directory Access Protocol, is an application protocol for accessing and maintaining distributed server directory information services over an TCP/IP network.
- LDAP Servers - Netscape Directory Server, Microsoft Active Directory (AD), Novell Directory Services (NDS), Sun Directory Services (SDS), ucent's Internet Directory Server (IDS)
- LDAP uses a client server model, with clients sending LDAP request over TCP/IP to the server.
- Stores attribute based data information. Stores these entries in a hierachial structure (i.e., Directory Information Tree(DIT)), based on the unique identifier (Distinguish Name(DN)).
- Designed to be read data more than written, such as No transactions or rollback.