# \#data-model

**URL:** https://the.fmsoup.org/tag/data-model/421.md

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## [Party Model and subtypes of a subtype](https://the.fmsoup.org/t/party-model-and-subtypes-of-a-subtype/3534)

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**Author:** [@Matteo](https://the.fmsoup.org/u/Matteo)\
**Replies:** 22\
**Last updated:** [May 5, 2023, 4:06pm UTC](https://the.fmsoup.org/t/party-model-and-subtypes-of-a-subtype/3534 "2023-05-05T16:06:36Z")

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Hello, I am starting to work with the Party Model and have developed a small sample file to test the structure. As you can see from the screenshot I have built a table for people, organisations, parties, the roles a pa…

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## [Nested sets: another data model for record hierarchies](https://the.fmsoup.org/t/nested-sets-another-data-model-for-record-hierarchies/1897)

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**Author:** [@Bobino](https://the.fmsoup.org/u/Bobino)\
**Replies:** 2\
**Last updated:** [March 14, 2021, 10:05pm UTC](https://the.fmsoup.org/t/nested-sets-another-data-model-for-record-hierarchies/1897 "2021-03-14T22:05:46Z")

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Continuing the discussion from Performance core principles: 13. Miscellaneous: I guess that was because you were relying on some data that could not be indexed. It is one of the drawbacks of the adjecency list model (t…