From

Where a definition starts: one type (entity or relation) and, optionally, the rows to start from. anchors are {column: value} maps that name every key column of the type (compile checks); extra columns are only meaningful under upsert, where the anchor row is the row written.

entity object

EntityType id

anyOf

• string
• null

string

relation object

RelationType id

anyOf

• string
• null

string

anchors object

Start rows as {key column: value} maps

anyOf

• object[]
• null

Array [

property name*any

]

From

{
  "entity": "string",
  "relation": "string",
  "anchors": [
    {}
  ]
}