|
DNS |
NIS |
LDAP |
|
---|---|---|---|---|
NAMESPACE |
Hierarchical |
Flat |
Hierarchical |
|
DATA STORAGE |
Files/ resource records |
2 column maps |
Directories [varied] |
|
SERVER NAMES |
Master/slave |
Master/slave |
Master/replica |
|
SECURITY |
None |
None (root or nothing) |
SSL, varied |
|
TRANSPORT |
TCP/IP |
RPC |
TCP/IP |
|
SCALE |
Global |
LAN |
Global |