Entities Reference

This section provides technical specifications and reference information for entities.

For conceptual explanations of entities, see Entities in the Metrics Concepts page.

Primary Key Types

Available primary key types for entities:

Type	Description	Use Case
`COLUMN_TYPE_STRING`	String identifiers	UUIDs, usernames, session IDs
`COLUMN_TYPE_INTEGER`	Integer identifiers	Autoincrementing user IDs, numeric keys
`COLUMN_TYPE_BOOLEAN`	Boolean values	Binary entity identifiers (rarely used)
`COLUMN_TYPE_DOUBLE`	Floating point numbers	Numeric identifiers with decimals (rarely used)

Unique names: Entity display names must be unique within a project
Immutable key type: You cannot change the primary key type after creation
Referenced entities: You cannot delete entities used in fact tables, dimension tables, or metrics
Case sensitivity: Entity names are case-sensitive

Reference entities using the resource name format:

entities/{entity_id}

Example: entities/user, entities/session