Domain Properties

You can modify an object's properties from its property sheet. To open a domain property sheet, double-click its Browser entry in the Domains folder. The following sections detail the property sheet tabs that contain the properties most commonly entered for domains.

The General tab contains the following properties:

Property	Description
Name	Specifies the name of the item, which should be clear and meaningful, and should convey the item's purpose to non-technical users.
Code	Specifies the technical name of the object, which is used for generating code or scripts.
Comment	Descriptive comment for the object.
Stereotype	Extends the semantics of the object beyond the core UML definition.
Data type	Form of the data corresponding to the domain ; numeric, alphanumeric, Boolean, or others
Multiplicity	Specification of the range of allowable number of values attributes using this domain may hold. The multiplicity of a domain is useful when working with a multiple attribute for example. The multiplicity is part of the data type and both multiplicity and data type may come from the domain. You can choose between: 0..1 – zero or one 0..* – zero to unlimited 1..1 – exactly one 1..* – one to unlimited * – none to unlimited

Detail Tab

The Detail tab contains a Persistent groupbox whose purpose is to improve the generation of code and data types during generation of a CDM or a PDM from an object-oriented model, and which contains the following properties:

Property	Description
Persistent	Groupbox for valid generation of CDM or PDM persistent models. Defines a model as persistent For more information on object persistence, see Managing Object Persistence During OOM to PDM Generation.
Data Type	Specifies a persistent data type used in the generation of a persistent model, either a CDM or a PDM. The persistent data type is defined from default PowerDesigner conceptual data types
Length	Maximum number of characters of the persistent data type.
Precision	Number of places after the decimal point, for persistent data type values that can take a decimal point.

The following tabs are also available:

Standard Checks - contains checks which control the values permitted for the domain (see Setting Data Profiling Constraints)
Additional Checks - allows you to specify additional constraints (not defined by standard check parameters) for the domain.
Rules - lists the business rules associated with the domain (see "Business Rules" in Chapter 4, Objects of the Core Features Guide ).

The tables below give details of the available data types:

Numeric Data Types

Data Type	Content	Length	Mandatory Precision
Integer	32-bit integer	—	—
Short Integer	16-bit integer	—	—
Long Integer	32-bit integer	—	—
Byte	256 values	—	—
Number	Numbers with a fixed decimal point	Fixed
Decimal	Numbers with a fixed decimal point	Fixed
Float	32-bit floating point numbers	Fixed	—
Short Float	Less than 32-bit point decimal number	—	—
Long Float	64-bit floating point numbers	—	—
Money	Numbers with a fixed decimal point	Fixed
Serial	Automatically incremented numbers	Fixed	—
Boolean	Two opposing values (true/false; yes/no; 1/0)	—	—

Character Data Types

Data Type	Content	Length
Characters	Character strings	Fixed
Variable Characters	Character strings	Maximum
Long Characters	Character strings	Maximum
Long Var Characters	Character strings	Maximum
Text	Character strings	Maximum
Multibyte	Multibyte character strings	Fixed
Variable Multibyte	Multibyte character strings	Maximum

Time Data Types

Data Type	Content
Date	Day, month, year
Time	Hour, minute, and second
Date & Time	Date and time
Timestamp	System date and time

Other Data Types

Data Type	Content	Length
Binary	Binary strings	Maximum
Long Binary	Binary strings	Maximum
Bitmap	Images in bitmap format (BMP)	Maximum
Image	Images	Maximum
OLE	OLE links	Maximum
Other	User-defined data type	—
Undefined	Not yet defined data type	—