Primary Domain Controller
(networking)(PDC) Each Windows NT domain has a Primary
Domain Controller and zero or more Backup Domain Controllers. The PDC holds the SAM database and
authenticates access requests from workstations and
servers in the domain.
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PDC
(1) (Primary Domain Controller) A service in a Windows server that manages security for its local domain. Every domain has one PDC, which contains a database of usernames, passwords and permissions. The PDC also provides a time service for the network and typically obtains the time from an edge router, which gets its time from the Internet. See domain-based network and BDC.(2) (Personal Digital Communications) A digital cellular phone system widely used in Japan. Based on TDMA, it transmits in the 810-826 MHz and 1477-1501 MHz bands. PDC is a 2G wireless system. See cellular generations and PHS.
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