# Reference Set Types

Most important SNOMED CT Reference Sets in Snow Owl:

#### **Content type Reference Sets**

* ![](/files/-M286fNcahI8ICyY44_p) Simple type Reference Sets
* ![](/files/-MVH2MHEP5Kajw-yPMVI) Association type Reference Sets
* ![](/files/-MVH2MHHCkIxX_z-oF3C) Attribute Value type Reference Sets
* ![](/files/-MVH2MHQlmtIyZpmDYU2) Query type Reference Sets
* ![](/files/-MVH2MHVnx6IwsKpBbri) OWL Expression type Reference Sets

#### **Language type Reference Sets**

* ![](/files/-MVH2MH_CilLgb3OSWPh) Language type Reference Sets

#### **Map type Reference Sets**

* ![](/files/-M286fNiaIbJIkkJJkwA) Simple Map type Reference Set
* ![](/files/-M286fNcahI8ICyY44_p) Simple Map with Description type Reference Set
* ![](/files/-MVH2MHedKsUIWjXsHSf) Complex Map type Reference Set
* ![](/files/-MVH2MHf1uly8vHg51-Y) Complex Map Extended with Map Block type Reference Set
* ![](/files/-M286fNlIRRzRICThHp-) Extended Map type Reference Set

#### **Metadata type Reference Sets**

* ![](/files/-MVH2MHixM4-5ivTZrlG) MRCM Reference Sets
  * ![](/files/-MVH2MHk9OmgvW_1FM4H) MRCM Domain Reference Sets
  * ![](/files/-MVH2MHloNhdqOnAVMpe) MRCM Attribute Domain Reference Sets
  * ![](/files/-MVH2MHnQTzbRuqeBPY0) MRCM Attribute Range Reference Sets
  * ![](/files/-MVH2MHoeSRgldDYP4Xm) MRCM Module Scope Reference Set
* ![](/files/-M568DJU5WOPlA2nRi4U) Module Dependency Reference Set
* ![](/files/-MVH2MHqCT5Nx_pB7CgU) Description Format Reference Set


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