Symbols

In this section:

• Common
• Data Sources

Common

Icon	Description
	Method
	Rails controller
	Module
	Alias of a method
	Global variable
	Instance variable
	Class variable
	Constant
	Hash key
	Variable
	Property
	Parameter
	Element
	Directory
	Test root
	Excluded root
Visibility modifiers
	private
	protected
	self method
	public

Data Sources

Icon	Description
	DB data source. Also, DBMS-specific icons are used:  DB2  Derby  H2  HSQLDB  MySQL  Oracle  PostgreSQL  SQL Server  SQLite  Sybase
	DB data source with the read-only status, e.g. for Derby.
	DDL data source
	Database
	Schema
	Table
	View
	Column
	A NOT NULL column
	Column with a primary key
	Column with a foreign key
	Column with an index
	Primary key
	Foreign key
	Index
	Trigger
	Stored procedure or function