Difference between LDAP & oracle DB

Hi..All,
I am totally new to the LDAP concepts. I attended a small training regarding LDAP. As far I I learned , its allows you to autheticate a user against the LDAP db. THe db is well tuned to do heavy weight read . My question is how does it differ from directly doing to a Oracle database to autheticate the user instead of going thru LDAP.
TIA,
Praveen

LDAP is a directory access protocol. It doesn't provide all the capabilities of an RDBMS like Oracle. It is a specialized protocol for accessing data that is more often read than updated. It is typically used to store user information and as such is used a lot for security infrastructure. A general relational DBMS may not have such specific built-in support for authentication and authorization. LDAP provides significant security support built-in.
In fact, Oracle (the company) has an LDAP offering which uses Oracle as the underlying data repository.

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