Conserved Domain Database was created in 2003.
Death Domain database was created in 2011.
Domain controller
Domain controller
One can do domain searches on Yahoo. Yahoo's website and database allows users to do domain searches for no cost. The company's database is large and adequate for domain searches.
One way to look up a domain name is to use a domain name database. One useful domain name database is the WHOIS database. There are also programs available to accomplish this goal.
the centralized directory database in the domain model is NTDS.DIT(directory information tree) but for the local sstem not connected to domain is SAM
In AD (OS server 2000,2003 etc) the all the information is stored in NTDS.DIT database if the server is standalone and not connected to any domain then account information is stored in SAM.
The WHOIS database records the domain name records, IP addresses and NIC handles of websites. The database can be searched to provide this information on request. It is also possible to become a private domain.
Forest Root Domain
NTDS.DIT the account information is stored
Tuple calculus was created by Edgar F. Codd to provide a database-query language. It typically consists of two calculi and domain.
WHOIS