# \#schema

**URL:** https://forums.buildingsmart.org/tag/schema/130.md

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## [bSDD schema diagrams](https://forums.buildingsmart.org/t/bsdd-schema-diagrams/4719)

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**Author:** [@VladimirAlexiev](https://forums.buildingsmart.org/u/VladimirAlexiev)\
**Replies:** 7\
**Last updated:** [May 19, 2023, 2:24pm UTC](https://forums.buildingsmart.org/t/bsdd-schema-diagrams/4719 "2023-05-19T14:24:26Z")

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As part of Semantic BSDD, we made a Semantic Objects (SOML) schema for bSDD. You can explore it with GraphQL Voyager I have now added an open source tool soml2puml, and two PlantUML diagrams: Overview: Full: …

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## [Ifc missing Entities](https://forums.buildingsmart.org/t/ifc-missing-entities/4320)

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**Author:** [@marslandp](https://forums.buildingsmart.org/u/marslandp)\
**Replies:** 1\
**Last updated:** [July 25, 2022, 5:49pm UTC](https://forums.buildingsmart.org/t/ifc-missing-entities/4320 "2022-07-25T17:49:27Z")

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I work on many projects where IFC is a required deliverable. In order to produce well structured IFC (using the dreaded R word) we hard code all Ifc entity types and entity type enumerations into our object libraries. W…