Hi Shanmukha,
1) What is LDAP ?
Short for Lightweight Directory Access Protocol, a set of protocols for accessing information directories. LDAP is based on the standards contained within the X.500 standard, but is significantly simpler. LDAP support is implemented in Web browsers and e-mail programs, which can query an LDAP-compliant directory. LDAP is a sibling protocol to HTTP and FTP and uses the ldap:// prefix in its URL.
In google, do a search and you will find alot of defination for LDAP.
2) What are the functions of LDAP?
The LDAP server stores the directory information in a database. The client makes a TCP/IP connection and sends requests to an LDAP server. The LDAP server executes the client requests and returns a response to the client. LDAP offers nine basic functional operations, viz., add, delete, modify, bind, unbind, search, compare, modify distinguished name and abandon.
Apart from the above basic operations, LDAP v3 includes new mechanism called Extended Operations, which allows additional operations to be defined for services not available in this protocol, for instance digitally signed operations and results. Using this feature it is possible to provide new operations and extend the functionality of existing operations.
3) How we integrate LDAP into portal server?
Checkout how to define an LDAP Directory as a Data Source. See below link
http://help.sap.com/saphelp_nw04/helpdata/en/12/7678123c96814bada2c8632d825443/content.htm
4) I want to know the Basics of LDAP
Click below link for the basic of LDAP in general.
http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm?info/rzahy/rzahyovrco.htm
If you are looking more about Portal with LDAP, I would suggest that you do a search here in the forum with search text "Portal LDAP" and I'm sure you will find all your answers.
Hope that helps. Award points for useful/helpful suggestions.
Ray
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