Allows teachers to use a course multiple times with different points, submissions, and enrollments.
| Name | Type | Default | Nullable | Children | Parents | Comment |
|---|---|---|---|---|---|---|
| course_id | uuid | false | public.courses | The course instance is an instance of this course. | ||
| created_at | timestamp with time zone | now() | false | Timestamp when the record was created. | ||
| deleted_at | timestamp with time zone | true | Timestamp when the record was deleted. If null, the record is not deleted. | |||
| description | varchar(255) | true | ||||
| ends_at | timestamp with time zone | true | Timestamp when the course instance ceases to be available to the students. | |||
| id | uuid | uuid_generate_v4() | false | public.certificate_configuration_to_requirements public.cheater_thresholds public.course_background_questions public.course_instance_enrollments public.course_module_completions public.email_templates public.exercise_slide_submissions public.offered_answers_to_peer_review_temporary public.peer_or_self_review_submissions public.peer_review_queue_entries public.pending_roles public.roles public.student_countries public.user_course_instance_exercise_service_variables public.user_course_settings public.user_exercise_states | A unique, stable identifier for the record. | |
| name | varchar(255) | true | A human readable description of the course instance, should tell students who are supposed to pick this course instance e.g. “For students that are participating in the Open University course BIRD-001.”. | |||
| starts_at | timestamp with time zone | true | Timestamp when the course instance is available to the students. | |||
| support_email | varchar(255) | true | ||||
| teacher_in_charge_email | varchar(255) | false | ||||
| teacher_in_charge_name | varchar(255) | false | ||||
| updated_at | timestamp with time zone | now() | false | Timestamp when the record was last updated. The field is updated automatically by the set_timestamp trigger. |
| Name | Type | Definition |
|---|---|---|
| course_instances_course_id_fkey | FOREIGN KEY | FOREIGN KEY (course_id) REFERENCES courses(id) |
| course_instances_has_only_one_default_instance_per_course | UNIQUE | UNIQUE NULLS NOT DISTINCT (course_id, name, deleted_at) |
| course_instances_pkey | PRIMARY KEY | PRIMARY KEY (id) |
| course_instances_support_email_check | CHECK | CHECK (((support_email)::text ~~ ‘%@%’::text)) |
| course_instances_teacher_in_charge_email_check | CHECK | CHECK (((teacher_in_charge_email)::text ~~ ‘%@%’::text)) |
| course_instances_teacher_in_charge_name_check | CHECK | CHECK ((TRIM(BOTH FROM teacher_in_charge_name) <> ’’::text)) |
| Name | Definition |
|---|---|
| course_instances_has_only_one_default_instance_per_course | CREATE UNIQUE INDEX course_instances_has_only_one_default_instance_per_course ON public.course_instances USING btree (course_id, name, deleted_at) NULLS NOT DISTINCT |
| course_instances_pkey | CREATE UNIQUE INDEX course_instances_pkey ON public.course_instances USING btree (id) |
| Name | Definition |
|---|---|
| set_timestamp | CREATE TRIGGER set_timestamp BEFORE UPDATE ON public.course_instances FOR EACH ROW EXECUTE FUNCTION trigger_set_timestamp() |
Generated by tbls