CardDAV
E356947
CardDAV is an open standard protocol that enables remote access, synchronization, and management of contact data over the Web using HTTP and WebDAV.
All labels observed (1)
| Label | Occurrences |
|---|---|
| CardDAV canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T3426578 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: CardDAV Context triple: [CalDAV, relatedStandard, CardDAV]
-
A.
CalDAV
CalDAV is an open standard protocol that allows clients to access, manage, and synchronize calendar data on a remote server over WebDAV.
-
B.
Cardfile
Cardfile is a simple card-based personal information manager included with early versions of Microsoft Windows for storing and organizing small text notes.
-
C.
iCalendar
iCalendar is a widely used open standard file format for exchanging calendar and scheduling information across different applications and services.
-
D.
Contacts app
The Contacts app is a built-in address book application on Apple devices that stores and manages users’ personal and business contact information.
-
E.
Google Contacts
Google Contacts is a contact management service by Google that stores and syncs users’ personal and professional contact information across Google’s apps and devices.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: CardDAV Target entity description: CardDAV is an open standard protocol that enables remote access, synchronization, and management of contact data over the Web using HTTP and WebDAV.
-
A.
CalDAV
CalDAV is an open standard protocol that allows clients to access, manage, and synchronize calendar data on a remote server over WebDAV.
-
B.
Cardfile
Cardfile is a simple card-based personal information manager included with early versions of Microsoft Windows for storing and organizing small text notes.
-
C.
iCalendar
iCalendar is a widely used open standard file format for exchanging calendar and scheduling information across different applications and services.
-
D.
Contacts app
The Contacts app is a built-in address book application on Apple devices that stores and manages users’ personal and business contact information.
-
E.
Google Contacts
Google Contacts is a contact management service by Google that stores and syncs users’ personal and professional contact information across Google’s apps and devices.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
application-layer protocol
ⓘ
network protocol ⓘ open standard ⓘ |
| authenticationMethod |
HTTP authentication
ⓘ
TLS client authentication ⓘ |
| basedOn |
HTTP
ⓘ
WebDAV ⓘ |
| category |
address book protocol
ⓘ
contact synchronization protocol ⓘ |
| compatibleWith |
vCard
ⓘ
surface form:
vCard 3.0
vCard ⓘ
surface form:
vCard 4.0
|
| dataModel | vCard ⓘ |
| definedInRFC | RFC 6352 ⓘ |
| intendedFor |
PIM clients
ⓘ
contact management applications ⓘ groupware servers ⓘ |
| layer | application layer ⓘ |
| mediaType |
text/vcard
ⓘ
text/vcard;version=3.0 ⓘ text/vcard;version=4.0 ⓘ |
| namespace | urn:ietf:params:xml:ns:carddav ⓘ |
| operatesOver | HTTP ⓘ |
| organizationDomain | IETF VCARDDAV Working Group ⓘ |
| publicationYear | 2011 ⓘ |
| relatedTo |
CalDAV
ⓘ
vCard ⓘ |
| securityMechanism | TLS ⓘ |
| standardizedBy |
Internet Engineering Task Force
ⓘ
surface form:
IETF
|
| status | Proposed Standard ⓘ |
| supportsMethod |
ACL
ⓘ
DELETE ⓘ MKCOL ⓘ OPTIONS ⓘ PROPFIND ⓘ PUT ⓘ REPORT ⓘ |
| supportsOperation |
management of contact data
ⓘ
remote access to contact data ⓘ synchronization of contact data ⓘ |
| supportsQuery | address book query report ⓘ |
| supportsResourceType |
address book collection
ⓘ
contact resource ⓘ |
| supportsSyncMechanism | WebDAV sync ⓘ |
| useCase |
centralized address book storage
ⓘ
synchronizing contacts between clients and servers ⓘ |
| usesExtensionOf | WebDAV ⓘ |
| usesTransportProtocol |
Transmission Control Protocol
ⓘ
surface form:
TCP
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: CardDAV Description of subject: CardDAV is an open standard protocol that enables remote access, synchronization, and management of contact data over the Web using HTTP and WebDAV.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.