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EDITING: lti_tables.plantuml

@startuml lti_tables

' Type	        Symbol
' Zero or One	|o--
' Exactly One	||--
' Zero or Many	}o--
' One or Many	}|--

' hide the spot
hide circle

' avoid problems with angled crows feet
skinparam linetype ortho

entity "assigments" {
  An assignment for on or more users to do
  --
  name   : text
  due_at : date
}

entity "lti_line_items" {
  LTI's version of assignment
  (A thing a user can earn a grade for)
  --
  assignment_id : bigint
  lti_resource_link_id: bigint
  extensions : jsonb
}

entity "lti_results" {
    LTI's version of a grade in a
    gradebook
    --
    lti_line_item_id : bigint
    submission_id    : bigint
    user_id          : bigint
    result_score     : double
    result_maximum   : double
}

entity "submissions" {
  A user's submission to an assignment
  --
  user_id : bigint
  assignment_id : bigint
  cached_due_date : text
}

entity "lti_resource_links" {
  Maps a tool and a context to some tool content,
  keeping track of custom parameters and
  specific settings for that link
  --
  context_external_tool_id : bigint
  custom : jsonb
  resource_link_uuid : uuid
  lookup_uuid : uuid
  context_type : varchar
}

entity "context_external_tools" {
  A tool in some context
  (Course, Account)
  --
  domain: varchar
  url: varchar
  consumer_key: varchar
  shared_secret: varchar
  tool_id : varchar
  developer_key_id: varchar
  context_type: varchar
}

entity "lti_tool_configurations" {
  Extra LTI-specific JSON config
  on Developer API keys
  --
  settings : jsonb
}

entity "developer_keys" {
  An API key that an application 
  can use to access Canvas's APIs
  --
  api_key: varchar
}

entity "content_tag" {
  An item in a module
  --
  title: varchar
  url: varchar
}

entity "context_external_tool_placements" {
  A context-tool added to a "placement" 
  --
  placement_type: varchar
  context_external_tool_id: bigint
}

assigments ||.o{ submissions

assigments   ||..o{ lti_line_items
lti_line_items ||.o{ lti_results 
submissions ||..|| lti_results

context_external_tools ||..o{ lti_resource_links

lti_resource_links ||.o{ lti_line_items

developer_keys ||..o{ context_external_tools
developer_keys ||.|| lti_tool_configurations

content_tag |o.o| lti_resource_links

' These tables were not included in this diagram, 
' as they are only pertinent to LTI2:
'  lti_tool_consumer_profiles
'  lti_tool_settings
'  lti_product_families
'  lti_resource_handlers
'  lti_tool_proxy_bindings
'  lti_tool_proxies
'  lti_message_handlers
'  lti_links

@enduml

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 lti_launch_overview.plantuml	PLANTUML	725 B	2023-09-24 03:36	EDIT
📄 lti_tables.plantuml	PLANTUML	2.5 KB	2023-09-24 03:36	EDIT