|
Root object type | |
|
Root for user-defined object types |
std::BaseObject is the root of the object type hierarchy and all object
types in EdgeDB, including system types, extend it either directly or
indirectly. User-defined object types extend from std::Object
type, which is a subtype of std::BaseObject.
The root object type.
Definition:
abstract type std::BaseObject {
# Universally unique object identifier
required property id -> uuid {
default := (select std::uuid_generate_v1mc());
readonly := true;
constraint exclusive;
}
# Object type in the information schema.
required readonly link __type__ -> schema::ObjectType;
}Subtypes may override the id property, but only with a valid UUID
generation function. Currently, these are uuid_generate_v1mc()
and uuid_generate_v4().
