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ldb is a LDAP-like embedded database. It is not at all LDAP standards compliant, so if you want a standards compliant database then please see the excellent OpenLDAP project.

What ldb does is provide a fast database with an LDAP-like API designed to be used within an application. In some ways it can be seen as a intermediate solution between key-value pair databases and a real LDAP database.

ldb is the database engine used in Samba4.


The main features that separate ldb from other solutions are:


ldb has limited programmer and administrator documentation:

If you need more information than is presented in this document, you may wish to look at the source code, especially the source code in the tools directory.

ldb makes use of the LDAP Data Interchange Format (LDIF), which is documented in RFC 2849.


ldb does not currently have its own mailing list or bug tracking system. For now, please use the samba-technical mailing list, and the Samba bugzilla bug tracking system.


You can download the latest release either via rsync or anonymous svn. To fetch via svn use the following commands:

  svn co svn://svnanon.samba.org/samba/branches/SAMBA_4_0/source/lib/ldb ldb
  svn co svn://svnanon.samba.org/samba/branches/SAMBA_4_0/source/lib/tdb tdb
  svn co svn://svnanon.samba.org/samba/branches/SAMBA_4_0/source/lib/talloc talloc

To fetch via rsync use these commands:

  rsync -Pavz samba.org::ftp/unpacked/samba4/source/lib/ldb .
  rsync -Pavz samba.org::ftp/unpacked/samba4/source/lib/tdb .
  rsync -Pavz samba.org::ftp/unpacked/samba4/source/lib/talloc .


ldb is another product of the prolific Andrew Tridgell.
Authentication services for Active Directory Domains
Likewise Open provides a means of integrating Unix desktops and servers
into an Active Directory (AD) environment by providing a means for hosts
to join the domain as member servers and make the Windows users and groups
available to other Unix applications and services via the PAM and Name
Service Switch libraries.
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