![Sybase Powerdesigner 7.5 Скачать руководство пользователя страница 140](http://html1.mh-extra.com/html/sybase/powerdesigner-7-5/powerdesigner-7-5_user-manual_1416512140.webp)
Defining check parameters
130
Defining check parameters
Check parameters are set of conditions which data must satisfy to remain
valid. They are used principally in for use in a CDM or a PDM.
There are two types of check parameters:
Parameter type
Description
Can be
attached to
Standard parameters
Common data constraints which define a
data range. For example minimum and
maximum values for an attribute
Attributes
Domains
Additional check
parameters
SQL expression defining a data
constraint using the %MINMAX%,
%LISTVAL%, and %RULES% variables
that are instantiated with standard
parameter values
Attributes
Domains
Validation rule
Business rule that is defined as a server
expression, and is attached to one of the
following listed objects
Classes
Attributes
Domains
Setting standard check parameters for objects
Standard parameters indicate common data constraints. The following table
lists standard parameters:
Parameter
Description
Minimum
Lowest acceptable numeric value
Maximum
Highest acceptable numeric value
Default
Value assigned in absence of an expressly entered value
Format
Data format (for example, 9999.99)
Unit
Standard measure
Uppercase
Forces all alphabetical characters to uppercase
Lowercase
Forces all alphabetical characters to lowercase
Cannot Modify
Protects from changes, results in a nonmodifiable attribute in
the class
List of Values
Authorized values
Содержание Powerdesigner 7.5
Страница 1: ...OBJECT ORIENTED MODEL User s Guide POWERDESIGNER 7 5...
Страница 8: ...viii...
Страница 22: ...Defining OOM properties 12...
Страница 97: ...Chapter 2 Building an Object Oriented Model 87 4 Modify the operation display preferences 5 Click OK...
Страница 144: ...Defining check parameters 134...
Страница 208: ...Generating for XML 198 6 Click OK An XML file is generated with the file extension xml...
Страница 210: ...Customizing scripts 200...
Страница 224: ...Generating a CDM from an OOM 214...
Страница 238: ...Generating a PDM from an OOM 228...
Страница 260: ...Object language editor categories 250...
Страница 268: ...Applying business rules to objects 258...
Страница 288: ...278...