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has-a

composition relationship in object-oriented programming
Thing binary_relation Q1985787
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has-a

Summary

has-an is a binary relation[1]. has-a draws 25 Wikipedia views per month (binary_relation category, ranking #9 of 13).[2]

Key Facts

  • has-a's image is recorded as ER Diagram MMORPG.svg[3].
  • has-a's instance of is recorded as binary relation[4].
  • has-a's subclass of is recorded as mereological relation[5].
  • has-a's Freebase ID is recorded as /m/01ngzf[6].
  • has-a's Microsoft Academic ID is recorded as 195435481[7].

Why It Matters

has-a draws 25 Wikipedia views per month (binary_relation category, ranking #9 of 13).[2] has-a has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[8] has-an is known by 8 alternative names across languages and contexts.[9]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . Freebase Data Dumps. wikidata.org.
  5. [7] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [8] ↑ . Wikidata sitelinks. wikidata.org.
  3. [9] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). has-a. Retrieved May 3, 2026, from https://4ort.xyz/entity/has-a
MLA “has-a.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/has-a.
BibTeX @misc{4ortxyz_has-a_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{has-a}}, year = {2026}, url = {https://4ort.xyz/entity/has-a}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): has-a — https://4ort.xyz/entity/has-a (retrieved 2026-05-03)

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