title: Supported Key Types role: manual tags: #manual #meta #reference #zettel #zettelstore syntax: zmk back: 00001005090000 00001006000000 00001007705000 00001012931200 backward: 00001005090000 00001006000000 00001006020000 00001007705000 00001012931200 box-number: 1 copyright: (c) 2020-present by Detlef Stern created: 20210126175322 forward: 00001006020000 00001006031000 00001006031500 00001006032000 00001006032500 00001006033000 00001006033500 00001006034000 00001006034500 00001006035000 00001006035500 00001006036500 00001007706000 lang: en license: EUPL-1.2-or-later modified: 20240219161909 published: 20240219161909 visibility: public All [[supported metadata keys|00001006020000]] conform to a type. User-defined metadata keys conform also to a type, based on the suffix of the key. |=Suffix|=Type |''-date''|[[Timestamp|00001006034500]] |''-number''|[[Number|00001006033000]] |''-role''|[[Word|00001006035500]] |''-time''|[[Timestamp|00001006034500]] |''-title''|[[Zettelmarkup|00001006036500]] |''-url''|[[URL|00001006035000]] |''-zettel''|[[Identifier|00001006032000]] |''-zid''|[[Identifier|00001006032000]] |''-zids''|[[IdentifierSet|00001006032500]] |any other suffix|[[EString|00001006031500]] The name of the metadata key is bound to the key type Every key type has an associated validation rule to check values of the given type. There is also a rule how values are matched, e.g. against a [[search value|00001007706000]] when selecting some zettel. And there is a rule how values compare for sorting. * [[Credential|00001006031000]] * [[EString|00001006031500]] * [[Identifier|00001006032000]] * [[IdentifierSet|00001006032500]] * [[Number|00001006033000]] * [[String|00001006033500]] * [[TagSet|00001006034000]] * [[Timestamp|00001006034500]] * [[URL|00001006035000]] * [[Word|00001006035500]] * [[Zettelmarkup|00001006036500]]