Property talk:P7409

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ERIC publication ID
ID of an article or book in ERIC

Associated item	Education Resources Information Center (Q2915193)
Applicable "stated in" value	Education Resources Information Center (Q2915193)
Data type	External identifier
Allowed values	E(D\d{6}|J\d{6,7})
Example	Weights and Measures Standards of the United States: A Brief History (Q61781625) → ED142418 Characteristics and Limitations of English Language Teaching in China: Autoethnography of a Mainland-born English Learner and Teacher (Q69586303) → EJ1213020 From Cantonese Lexical Tone Awareness to Second Language English Vocabulary: Cross-Language Mediation by Segmental Phonological Awareness (Q69586902) → EJ1225398
Formatter URL	https://eric.ed.gov/?id=$1
See also	What Works Clearinghouse study ID (P9609)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P7409 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 116 Main statement 111 95.7% of uses Qualifier 3 2.6% of uses Reference 2 1.7% of uses
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Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7409#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7409#Unique value, SPARQL (every item), SPARQL (by value)

Format “E(D\d{6}|J\d{6,7})”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7409#Format, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7409#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7409#Scope, SPARQL

Format Violation, but it works

Computer-Mediated Communication, eLearning, and Interactivity: A Review of the Research (Q101987426) generates a format constraint violation, but https://eric.ed.gov/?id=EJ654230 shows EJ654230 as the ID. That ID works, so I'm thinking the constraint is wrong. I don't want to "break" the property, so I'll leave it alone. Thanks. Trilotat (talk) 13:52, 16 November 2020 (UTC)