iAnywhere Water System User Manual

Defining identifiers

An identifier is a class attribute, or a combination of class attributes, whose

values uniquely identify each occurrence of the class. An identifier is the

OOM equivalent of a CDM identifier or a primary key or an alternate key in

a PDM.

Each class must have at least one identifier. If a class has only one identifier,

than it is designated by default as the primary identifier for the class. A

primary identifier is the main identifier for a class.

You can attach attributes or business rules to an identifier.

Identifier properties

An identifier has the following properties:

Property Description

Maximum

length

Name Name of the identifier 254

Code Reference name for the identifier 254

Comment Descriptive comment for the identifier —

Class Name of the class to which the identifier belongs to 254

Primary

identifier

Indicates that the identifier is the primary identifier of

the class. There can only be one primary identifier for

a given class

—

An identifier definition also includes the following properties, which are

defined on associated property sheets:

Property Description

Attribute Defines the characteristics of an identifier

Business rules A rule that your business follows. Business rules guide and

document the creation of a model