The most commonly used predefined Entity Table fields are Name, Type, and Class. These fields can be specified in either a SELECT command or a WHERE command.
Class
Is a database field, specified as either Diagram, Symbol or Definition. The class can also be specified as the Class Number, where the number indicates a diagram (Class Number = 1), a symbol (Class Number = 2), or a definition (Class Number = 3).
Name
Is a database field that contains the user-specified names for diagrams, symbols or definitions; this field may contain up to 31 characters.
Type
Is a database field that is dependent on the Class. Types for diagrams and definitions can be seen in the scrolling Select for Opening, Add Diagram, and Add Definition dialogs accessed through the Diagram and Definition menus. The type can also be specified by the Type Number, which is a database field that contains a 5-digit numeric value corresponding to the Type field value.
Type and Type Number values can be used with the Reporting System to specify diagrams, symbols and definitions. A Type Number can be used to obtain a more precise specification. For example, in a report of symbols, each type of symbol can be differentiated from the others, even if two types of symbols have the same name.