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Sybase XML manual Defining group particles, Group particles

Models: XML

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Chapter 2 Building an XML model

Child elements are linked to their parent element through a group particle.

Defining group particles

Group particles indicate how child elements are related with their parent element.

You can choose a group particle from the following list:

Tool	Tooltip	Description
	Sequence	Child elements must appear at least once in the order of
		their declaration
	Choice	Only one child element can be linked to the parent
		element
	All	Child elements can appear in any order and each of
		them once or not

In a schema, a group particle is declared with its corresponding tag: <sequence>, <choice> or <all>.

Group particles in	In a model targeted with the XML-Data Reduced language, group particles
XDR files	are declared through the order attribute of an <ElementType> tag:
	Group particle	Value of the order attribute in XDR
	Group particle	Value of the order attribute in XDR

	Sequence	seq
	Choice	one
	All	many

Extract of an XDR file:

XSM User's Guide

Page 65

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Sybase XML manual Defining group particles, Group particles, Group particle Value of the order attribute in XDR

Contents

11.1 Sybase PowerDesignerLast Revised June Contents 100 Managing external shortcuts through references and data101 102Working with an XML model 139 How to reverse engineer an XSD, a DTD or an XDR Why reverse engineer an XSD, a DTD or an XDR169 Mapping XML Model objects to OOM objects 171Vii Exchanging data with databases supporting XML 215Viii Documentation primer SubjectAudience Physical Data Model User’s Guide Conceptual Data Model User’s Guide To work with the CDMObject Oriented Model Getting Started Business Process Model User’s GuideTypographic conventions Bibliography BeforeInsertTrigger templateXii XML Model Basics ContentsFunctional overview Demo models What is an XML model?About XML Objects in an XML model XSD Tool Object DescriptionObjects in a diagram Tool Sequence symbol Choice symbol All symbol Tool Element symbol Group symbol Complex type symbolAll Not certified resource file Defining the XML model environmentChoosing the XML language of an XML model Language Description Changing the XML language of an XML model™ To change the XML language of an XML model Changes concerning simple and complex types Option Description Selecting extended model definitions at model creationDefining model options ™ To define XML model options XML model extended dependenciesDefining the XML model environment ™ To define the properties of an XML model Defining an XML modelDefining model properties Property Description Model GeneralModel Detail Tool Tooltip Description Model ItemsButton Moves item Model External Schemas Model Namespaces XML Model Basics Model Preview Creating an XML model™ To create a new XML model using the New model option Creating an XML model using the New model optionDefining an XML model List of templates Detaching an XML model from the workspace Opening an existing XML model™ To open an existing XML model ™ To detach an XML model from a workspaceSaving an XML Saving and closing an XML modelModel Closing an XML modelDefining an XML model Building an XML model Defining an XML diagram XML diagram basicsWhy build an XML diagram? Expand/Expand All/Collapse/Arrange Symbols features Creating an XML diagramGroup Symbols feature Defining elements Defining element properties Global and local elements in XDR files Element general propertiesDefining elements Property or XDR filesElement detail properties Building an XML model Element attributes propertiesElement Sources Element constraints propertiesElement mapping properties ™ To create an element from the palette Creating an elementAttributes Mapping Defining elements Tool Action Result How to link a child object to an element?Pointer indications Defining the attributes of an elementBuilding an XML model Global and local attributes in XDR files Attribute general propertiesDefining attributes Attribute values Attribute detail properties™ To add an attribute to an element Adding an attribute to an elementElement values with XDR Preference Description Modifying element display preferencesLinking child elements to a parent element Group particle Value of the order attribute in XDR Defining group particlesGroup particles Items list Group particles properties™ To create a group particle from an element property sheet Creating a group particleFrom the palette Name and code uniquenessClicking an element symbol with the Element tool How to link a child object to a group particle?Defining Any properties Any general properties ™ To create an Any Defining Any Attribute properties Modifying the Any display preferenceFor example Any Attribute general properties Defining a unique constraint Defining identity constraintsUnique fields properties Unique general propertiesDefining a key constraint Key fields properties Defining a keyRef constraintKey general properties Defining identity constraints KeyRef fields properties Creating an identity constraintKeyRef general properties Defining an identity constraint selector Syntax Description XPath abbreviated syntax™ To display a selector property sheet Defining selector general propertiesDefining an identity constraint field ™ To create an identity constraint field Defining field general propertiesBuilding an XML model Defining a group of elements Defining groupsDefining group properties Groups in DTD and XDR files ™ To create a group of elements from the palette Creating a group of elementsDefining groups How to link a child object to a group of elements? Defining a group of attributes Modifying the group display preferenceAttribute group general properties Defining attribute group propertiesProperties Attribute groupAttributes ™ To create an attribute group from the Browser tree view Creating an attribute groupDefining groups Data types ReferencesExample of shortcuts through a reference and a data type Type of derivation Description What is a simple type?Defining simple types Modifying the simple type display preference Defining simple type propertiesCreating a simple type ™ To create a simple type from the Browser tree viewBuilding an XML model Defining complex types What is a complex type?Complex type general properties Defining complex type propertiesComplex type attributes properties Complex type detail propertiesComplex Type Complex type mapping propertiesSources Icon Tool DescriptionCreating a complex type Modifying complex type display preferences™ To create a complex type from the palette How to link a child object to a complex type? Pointer indications Simple content Defining simple content properties™ To create a simple content General propertyComplex content Defining complex content properties™ To create a complex content General propertiesDeriving by extension Defining derivationsDerivation in element property sheet 102103 Defining extension™ To define a derivation by extension 104 Deriving by restrictionRestriction on a simple type Restriction general Defining restriction facetsRestriction detail 105Restriction Facet generalEnumerations 106107 Restriction patterns108 Creating a restriction on a simple type™ To create a restriction on a simple type 109 110 Enumeration and Pattern facets Restriction on a complex type™ To create a restriction on a complex type 111112 Deriving by list113 Deriving by union™ To define a simple type derivation by list Union types Union general™ To define a simple type derivation by union 114115 Defining annotationsDefining documentation properties Defining annotation propertiesAnnotation general property Annotation items propertiesDefining application information properties Documentation contentDocumentation general properties Application information general properties118 Application information contentCreating an annotation 119 120 Defining notationsDefining notation properties 121 Creating a notation™ To create a notation from the Browser tree view Defining entity properties Defining entities122 Entity name Reference Value123 Creating an entity™ To create an entity from the Browser tree view 124 Defining an import Defining import, include and redefineDefining import properties Import general126 Creating an import™ To create an import from the Browser tree view Defining include properties Defining an includeInclude general 127Creating an include Defining a redefine™ To create an include from the Browser tree view 128129 Defining redefine propertiesRedefine general Redefine items Creating a redefine™ To create a redefine from the Browser tree view 130131 Defining business rules What is a business rule?Defining business rule properties Business rule general propertiesBusiness rule expression property Creating a business rule133 Type Description Example134 ™ To create a business rule from the List of Business Rules135 Applying a business rule to an XML object136 ™ To apply a business rule to an XML object137 Column in the List of business rules138 139 Working with an XML modelChecking an XML model Levels of problem severityXML model check options 140XML model object selection in the Check Model Selecting objects in the diagramAutomatic correction 141142 Checking an XML model™ To check an XML model 143 Selecting all or clearing all check boxesDisplaying previously applied check options in an XML model ™ To display errors and warnings selected in the last checkDockable result window 144Display the Check toolbar Making corrections based on XML model check resultsContextual menu 145Making automatic corrections to an XML model Making manual corrections to an XML model™ To make manual corrections to an XML model ™ To make automatic corrections to an XML modelGroup particle check XML Model objects verified by Check ModelExistence of particle Invalid cardinalityIdentifier uniqueness Model checkUndefined identifier Shortcut code uniquenessData source check Business rule check in an XSMMissing namespaces Business rule name and code uniquenessData source name and code uniqueness File checkExistence of model 150Embedded file name uniqueness Entity checkExistence of external file location Entity name and code uniquenessComplex type check Include checkSimple type check Existence of attribute Element checkElement name and code uniqueness Undefined type154 Undefined reference155 Group checkGroup name and code uniqueness Notation check Attribute checkAttribute name and code uniqueness 156Notation name and code uniqueness Attribute group checkUndefined notation Attribute group name and code uniquenessImport check Undefined schema location and namespaceRedefine check Existence of attributesExistence of component Key checkKey name and code uniqueness Existence of fields160 KeyRef checkKeyRef name and code uniqueness 161 Unique checkUnique name and code uniqueness Extended link check Extended object checkExtended object name and code uniqueness Extended link name and code uniquenessExtension check Replication checkRestriction check Partial object replication164 Simple type list checkExistence of facet Annotation check Simple type union checkExistence of items 165Understanding object mapping Mapping objects in an XML modelDefining data sources in an XML model 166Creating a data source in an XML model Data source properties in an XML model™ To create a data source in an XML model 167168 Mapping elements Mapping XML Model objects to PDM objects169 XML Model object PDM objectTool Description Mapping complex types170 XML Model object OOM object Mapping XML Model objects to OOM objects171 172 Creating a mapping for an XML object™ To create a mapping for an element 173 174 Create From Sources and Generate Mapping tools175 Modifying the mapping of an attribute™ To modify the mapping of an attribute Local objects Manipulating XML objects graphicallyMove 176Example converting a local object into a global object Global objects™ To convert a local object into a global object Drag and drop178 After conversions179 Comparing and merging XML modelsGenerating XML Model objects Generating an XML model from a Physical Data Model180 PDM object Generated object in an XML modelXML model naming conventions Generating and updating an XML modelGenerate new XML 181Defining XML model generation options Update existingXML model Clearing the Preserve modifications check box183 Check model before generation184 Generating a new XML model from a PDM™ To generate a new XML model from a PDM Generating an XML model from a package Updating an existing XML model185 Preserve modifications Result186 ™ To update an existing XML model by generating from a PDMPreserve modifications 187 Merging modelsOOM Object Generated object in an XML model Generating an XML model from an Object- Oriented Model188 189 190 191 192 Generating a new XML model from an OOM™ To generate a new XML model from an OOM 193 194 ™ To update an existing XML model by generating from an OOM195 Editing an XML model report What is a report?Creating an XML model report ™ To create a model report197 198 Inserting diagramLanguage in a template 199 200 201 Why generate a DTD file? Why generate an XSD file?Why generate an XDR file? Generating an XSD, a DTD or an XDR fileCheck model Defining generation parametersDefining generation targets 203Defining generation options Using the Move up or down arrowsDefining generation tasks 204Parameter entities during DTD generation How to generate an XSD, a DTD or an XDR file?205 Model targeted with Generated file206 207 Why reverse engineer an XSD, a DTD or an XDR file? What is reverse engineering?How to reverse engineer an XSD, a DTD or an XDR file? Reverse engineering an XSD, a DTD or an XDR fileReverse engineering target models Reverse engineering optionsReverse engineering to a new XML model Convert Unique References210 211 212 Reverse engineering to an existing XML model213 Auto-layout214 215 Exchanging data with databases supporting XML216 Why use XML in databases?217 Generating an annotated schema for Microsoft SQL ServerMapping XML objects to PDM objects 218 219 220 221 222 Extended model definitions223 Annotated schema preview224 225 Reinforcing mapping with extended attributesAnnotation Description 226227 228 229 230 Generating an annotated schema for Oracle™ To generate an annotated schema for Oracle 231 232 233 234 235 236 ™ To generate a DAD file for IBM DB2 Generating a DAD file for IBM DB2237 Type of storage Type of mapping Description238 Generating a DAD file for IBM DB2239 240 241 242 243 DAD file previewExtended attribute Description 244245 246 247 248 249 Generating SQL/XML queries™ To generate SQL/XML queries 250 Generating SQL/XML queries251 252 253 254 255 Generating from an XML modelTarget models parameters Generation basics256 Generation option Description257 Generating from an XML model258 259 Why generate an XML model from an XML model?Generating an XML model from an XML model 260 Generating an XML model from an XML model261 Generating a new XML model from an XML model262 ™ To generate a new XML model from an XML model263 Updating an existing XML model264 265 266 267 268 XSM User’s Guide 269 Unique UnionXML language XPath271 Index272 PowerDesigner273 IBM DB2 274275 276 XML 277278