ECDbMeta Schema
Alias: meta
Version: 4.0.1
Table of contents
- Entity Classes
- Struct Classes
- Relationship Classes
- ClassHasAllBaseClasses
- ClassHasBaseClasses
- ClassOwnsLocalProperties
- CompositeUnitRefersToUnit
- FormatOwnsCompositeUnits
- PhenomenonOwnsUnits
- PropertyHasCategory
- PropertyHasEnumeration
- PropertyHasKindOfQuantity
- PropertyHasNavigationRelationshipClassId
- PropertyHasStructType
- RelationshipConstraintHasAbstractConstraintClass
- RelationshipConstraintHasClasses
- RelationshipHasConstraints
- SchemaHasSchemaReferences
- SchemaOwnsClasses
- SchemaOwnsEnumerations
- SchemaOwnsFormats
- SchemaOwnsKindOfQuantities
- SchemaOwnsPhenomena
- SchemaOwnsPropertyCategories
- SchemaOwnsUnitSystems
- SchemaOwnsUnits
- UnitHasInvertedUnit
- UnitSystemHasUnits
- Enumerations
Entity Classes
ECClassDef (ECClass) Sealed EntityClass 
ECClass
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| Type | ECClassType | ||
| Modifier | ECClassModifier | ||
| CustomAttributeContainerType | ECClassType::CustomAttribute: Specifies on which containers the custom attribute ECClass can be applied to. | ECCustomAttributeContainerType | |
| RelationshipStrength | Applies to ECClassType::Relationship only. | ECRelationshipStrength | |
| RelationshipStrengthDirection | Applies to ECClassType::Relationship only. | ECRelationshipDirection |
ECEnumerationDef (ECEnumeration) Sealed EntityClass
ECEnumeration
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| Type | PrimitiveType | ||
| IsStrict | boolean | ||
| EnumValues | struct array |
ECPropertyDef (ECProperty) Sealed EntityClass
ECProperty
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Class | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| IsReadonly | boolean | ||
| Priority | int | ||
| Ordinal | Position of the ECProperty in its ECClass | int | |
| Kind | ECPropertyKind | ||
| PrimitiveType | ECPropertyKind::Primitive: data type. ECPropertyKind::PrimitiveArray: data type of array elements. | PrimitiveType | |
| PrimitiveTypeMinLength | Minimum length of strings or blobs. | int | |
| PrimitiveTypeMaxLength | Maximum length of strings or blobs. | int | |
| PrimitiveTypeMinValue | Minimum value of numeric primitives. | double | |
| PrimitiveTypeMaxValue | Maximum value of numeric primitives. | double | |
| Enumeration | ECPropertyKind::Primitive: Id of this property's ECEnumerationDef. | navigation | |
| ExtendedTypeName | ECPropertyKind::Primitive or ECPropertyKind::PrimitiveArray: Extended type name further describing PrimitiveType. | string | |
| StructClass | ECPropertyKind::Struct: ECClassId of property's struct type. ECPropertyKind::StructArray: ECClassId of array element struct type. | navigation | |
| KindOfQuantity | ECPropertyKind::Primitive or ECPropertyKind::PrimitiveArray: Id of this property's KindOfQuantityDef. | navigation | |
| Category | Id of this property's PropertyCategoryDef. | navigation | |
| ArrayMinOccurs | ECPropertyKind::PrimitiveArray or ECPropertyKind::StructArray | int | |
| ArrayMaxOccurs | ECPropertyKind::PrimitiveArray or ECPropertyKind::StructArray | int | |
| NavigationRelationshipClass | ECPropertyKind::Navigation: ECClassId of property's relationship class. | navigation | |
| NavigationDirection | ECPropertyKind::Navigation: Direction to follow the relationship defined in NonPrimitiveTypeClassId. | ECRelationshipDirection |
ECRelationshipConstraintDef Sealed EntityClass
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| RelationshipClass | navigation | ||
| RelationshipEnd | ECRelationshipEnd | ||
| MultiplicityLowerLimit | int | ||
| MultiplicityUpperLimit | int | ||
| IsPolymorphic | boolean | ||
| RoleLabel | string | ||
| AbstractConstraintClass | ECClassId of base class for constraint classes of this constraint | navigation |
ECSchemaDef (ECSchema) Sealed EntityClass
ECSchema
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| Alias | string | ||
| VersionMajor | int | ||
| VersionWrite | int | ||
| VersionMinor | int | ||
| OriginalECXmlVersionMajor | int | ||
| OriginalECXmlVersionMinor | int |
FormatCompositeUnitDef (FormatCompositeUnit) Sealed EntityClass
FormatCompositeUnit
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Format | navigation | ||
| Label | string | ||
| Unit | navigation | ||
| Ordinal | Position of the Composite Unit in its Format | int |
FormatDef (Format) Sealed EntityClass
Format
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| NumericSpec | string | JSON | |
| CompositeSpec | CompositeSpec without units. Composite units are held by FormatCompositeUnitDef | string | JSON |
KindOfQuantityDef (KindOfQuantity) Sealed EntityClass
KindOfQuantity
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| PersistenceUnit | string | ||
| RelativeError | double | ||
| PresentationUnits | string array |
PhenomenonDef (Phenomenon) Sealed EntityClass
Phenomenon
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| Definition | string |
PropertyCategoryDef (PropertyCategory) Sealed EntityClass
PropertyCategory
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| Priority | int |
UnitDef (Unit) Sealed EntityClass
Unit
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string | ||
| UnitSystem | navigation | ||
| Phenomenon | navigation | ||
| Definition | string | ||
| Numerator | double | ||
| Denominator | double | ||
| Offset | double | ||
| IsConstant | boolean | ||
| InvertingUnit | If this property is set, this UnitDef is an inverted unit. It inverts the unit specified by this property. | navigation |
UnitSystemDef (UnitSystem) Sealed EntityClass
UnitSystem
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Schema | navigation | ||
| Name | string | ||
| DisplayLabel | string | ||
| Description | string |
ECEnumeratorDef Sealed StructClass
Properties
| Name | Description | Label | Category | Read Only | Priority |
|---|---|---|---|---|---|
| Name | false | 0 | |||
| DisplayLabel | false | 0 | |||
| Description | false | 0 | |||
| IntValue | false | 0 | |||
| StringValue | false | 0 |
Relationship Classes
ClassHasAllBaseClasses Sealed RelationshipClass
Relates a given ECClassId (Source) to all its base classes (recursively) (Target). For optimization reasons this ECRelationshipClass also holds a row for each ECClass that points to itself. Base class id order: class itself, then base classes in breadth first manner.
Strength: Referencing
Strength Direction: Forward
Source
Target
ClassHasBaseClasses Sealed RelationshipClass
Strength: Referencing
Strength Direction: Forward
Source
Target
ClassOwnsLocalProperties Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
CompositeUnitRefersToUnit Sealed RelationshipClass
Strength: Referencing
Strength Direction: Forward
Source
Target
FormatOwnsCompositeUnits Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
PhenomenonOwnsUnits Sealed RelationshipClass
PropertyHasCategory Sealed RelationshipClass
Relates the property to its PropertyCategory.
Strength: Referencing
Strength Direction: Forward
Source
Target
PropertyHasEnumeration Sealed RelationshipClass
ECPropertyKind::Enumeration: relates the property to its ECEnumeration.
Strength: Referencing
Strength Direction: Forward
Source
Target
PropertyHasKindOfQuantity Sealed RelationshipClass
ECPropertyKind::Primitive or ECPropertyKind::PrimitiveArray: relates the property to its KindOfQuantity.
Strength: Referencing
Strength Direction: Forward
Source
Target
PropertyHasNavigationRelationshipClassId Sealed RelationshipClass
ECPropertyKind::Navigation: relates the navigation property to its backing RelationshipECClass.
Strength: Referencing
Strength Direction: Forward
Source
Target
PropertyHasStructType Sealed RelationshipClass
ECPropertyKind::Struct: relates the struct property to its struct ECClass. ECPropertyKind::StructArray: relates the struct array property to its array element type.
Strength: Referencing
Strength Direction: Forward
Source
Target
RelationshipConstraintHasAbstractConstraintClass Sealed RelationshipClass
Strength: Referencing
Strength Direction: Forward
Source
Target
RelationshipConstraintHasClasses Sealed RelationshipClass
Strength: Referencing
Strength Direction: Forward
Source
Target
RelationshipHasConstraints Sealed RelationshipClass
Strength: Referencing
Strength Direction: Forward
Source
Target
SchemaHasSchemaReferences Sealed RelationshipClass
Strength: Referencing
Strength Direction: Forward
Source
Target
SchemaOwnsClasses Sealed RelationshipClass
SchemaOwnsEnumerations Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
SchemaOwnsFormats Sealed RelationshipClass
SchemaOwnsKindOfQuantities Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
SchemaOwnsPhenomena Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
SchemaOwnsPropertyCategories Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
SchemaOwnsUnitSystems Sealed RelationshipClass
Strength: Embedding
Strength Direction: Forward
Source
Target
SchemaOwnsUnits Sealed RelationshipClass
UnitHasInvertedUnit Sealed RelationshipClass
UnitSystemHasUnits Sealed RelationshipClass
Enumerations
ECClassModifier Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| None | 0 | |
| Abstract | 1 | |
| Sealed | 2 |
ECClassType Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Entity | 0 | |
| Relationship | 1 | |
| Struct | 2 | |
| CustomAttribute | 3 |
ECCustomAttributeContainerType Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Schema | 1 | |
| EntityClass | 2 | |
| CustomAttributeClass | 4 | |
| StructClass | 8 | |
| RelationshipClass | 16 | |
| AnyClass | 30 | |
| PrimitiveProperty | 32 | |
| StructProperty | 64 | |
| PrimitiveArrayProperty | 128 | |
| StructArrayProperty | 256 | |
| NavigationProperty | 512 | |
| AnyProperty | 992 | |
| SourceRelationshipConstraint | 1024 | |
| TargetRelationshipConstraint | 2048 | |
| AnyRelationshipConstraint | 3072 | |
| Any | 4095 |
ECPropertyKind Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Primitive | 0 | |
| Struct | 1 | |
| PrimitiveArray | 2 | |
| StructArray | 3 | |
| Navigation | 4 |
ECRelationshipDirection Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Forward | 1 | |
| Backward | 2 |
ECRelationshipEnd Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Source | 0 | |
| Target | 1 |
ECRelationshipStrength Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Referencing | 0 | |
| Holding | 1 | |
| Embedding | 2 |
PrimitiveType Enumeration
Backing Type: int
Strict: true
| Label | Value | Description |
|---|---|---|
| Binary | 257 | |
| Boolean | 513 | |
| DateTime | 769 | |
| Double | 1025 | |
| Integer | 1281 | |
| Long | 1537 | |
| Point2d | 1793 | |
| Point3d | 2049 | |
| String | 2305 | |
| IGeometry | 2561 |
Last Updated: 15 April, 2024
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