Defining field general properties | Sybase XML instruction

Defining identity constraints

Defining field general properties

The General page of a field property sheet displays the following properties:

Property	Description
XPath	An XPath expression relative to each element selected by the
	selector of the identity constraint. It identifies a single element
	(with a simple type) whose content or value is used for the
	identity constraint
Stereotype	Sub-classification used to extend the semantics of an object
	without changing its structure. It can be predefined or user-
	defined
ID	ID of the field. Its value must be of type ID and unique within
	the model containing the field

To create an identity constraint field:

1Click the Fields tab of an identity constraint (unique, key or keyRef) property sheet.

2Click any empty line in the Fields page.

An arrow appears at the beginning of the line.

3Type an XPath expression.

4Click Apply.

5Double-click the arrow left of the row.

74	PowerDesigner

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Sybase XML manual Defining field general properties, ™ To create an identity constraint field

Contents

Sybase PowerDesigner 11.1 Last Revised June Contents 101 Managing external shortcuts through references and data100 102 Working with an XML model 139 169 Why reverse engineer an XSD, a DTD or an XDRHow to reverse engineer an XSD, a DTD or an XDR Mapping XML Model objects to OOM objects 171 Exchanging data with databases supporting XML 215 Vii Viii Documentation primer SubjectAudience Object Oriented Model Getting Started Conceptual Data Model User’s Guide To work with the CDMPhysical Data Model User’s Guide Business Process Model User’s Guide BeforeInsertTrigger template Typographic conventions Bibliography Xii Contents XML Model Basics Functional overview What is an XML model? Demo models About XML Objects in an XML model Tool Object Description XSD Objects in a diagram Tool Element symbol Group symbol Complex type symbol Tool Sequence symbol Choice symbol All symbol All 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 Selecting extended model definitions at model creation Option Description Defining model options XML model extended dependencies ™ To define XML model options Defining the XML model environment ™ To define the properties of an XML model Defining an XML modelDefining model properties Model General Property Description Model Detail Tool Tooltip Description Model ItemsButton Moves item Model External Schemas Model Namespaces XML Model Basics Creating an XML model Model Preview Creating an XML model using the New model option ™ To create a new XML model using the New model option Defining an XML model List of templates ™ To open an existing XML model Opening an existing XML modelDetaching an XML model from the workspace ™ To detach an XML model from a workspace Model Saving and closing an XML modelSaving an XML Closing an XML model Defining an XML model Building an XML model XML diagram basics Defining an XML diagram Why build an XML diagram? Expand/Expand All/Collapse/Arrange Symbols features Creating an XML diagramGroup Symbols feature Defining elements Defining element properties Element general properties Global and local elements in XDR files Defining elements XDR files Property or Element detail properties Element attributes properties Building an XML model Element Sources Element constraints propertiesElement mapping properties ™ To create an element from the palette Creating an elementAttributes Mapping Defining elements How to link a child object to an element? Tool Action Result Defining the attributes of an element Pointer indications Building an XML model Attribute general properties Global and local attributes in XDR files Defining attributes Attribute detail properties Attribute values ™ 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 Group particles properties Items list Creating a group particle ™ To create a group particle from an element property sheet Name and code uniqueness From the palette How to link a child object to a group particle? Clicking an element symbol with the Element tool Defining Any properties Any general properties ™ To create an Any Modifying the Any display preference Defining Any Attribute properties For example Any Attribute general properties Defining identity constraints Defining a unique constraint Unique general properties Unique fields properties Defining 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 XPath abbreviated syntax Syntax Description Defining selector general properties ™ To display a selector property sheet Defining an identity constraint field Defining field general properties ™ To create an identity constraint field Building an XML model Defining groups Defining a group of elements Defining group properties Groups in DTD and XDR files Creating a group of elements ™ To create a group of elements from the palette Defining groups How to link a child object to a group of elements? Modifying the group display preference Defining a group of attributes Defining attribute group properties Attribute group general properties Properties Attribute groupAttributes Creating an attribute group ™ To create an attribute group from the Browser tree view Defining groups References Data types Example of shortcuts through a reference and a data type Type of derivation Description What is a simple type?Defining simple types Creating a simple type Defining simple type propertiesModifying the simple type display preference ™ To create a simple type from the Browser tree view Building an XML model What is a complex type? Defining complex types Defining complex type properties Complex type general properties Complex type detail properties Complex type attributes properties Sources Complex type mapping propertiesComplex Type Icon Tool Description Modifying complex type display preferences Creating a complex type ™ To create a complex type from the palette How to link a child object to a complex type? Pointer indications ™ To create a simple content Defining simple content propertiesSimple content General property ™ To create a complex content Defining complex content propertiesComplex content General properties Derivation in element property sheet Defining derivationsDeriving by extension 102 103 Defining extension™ To define a derivation by extension 104 Deriving by restrictionRestriction on a simple type Restriction detail Defining restriction facetsRestriction general 105 Enumerations Facet generalRestriction 106 Restriction patterns 107 108 Creating a restriction on a simple type™ To create a restriction on a simple type 109 110 ™ To create a restriction on a complex type Restriction on a complex typeEnumeration and Pattern facets 111 Deriving by list 112 113 Deriving by union™ To define a simple type derivation by list ™ To define a simple type derivation by union Union generalUnion types 114 Defining annotations 115 Annotation general property Defining annotation propertiesDefining documentation properties Annotation items properties Documentation general properties Documentation contentDefining application information properties Application information general properties 118 Application information contentCreating an annotation 119 120 Defining notationsDefining notation properties 121 Creating a notation™ To create a notation from the Browser tree view 122 Defining entitiesDefining entity properties Entity name Reference Value 123 Creating an entity™ To create an entity from the Browser tree view 124 Defining import properties Defining import, include and redefineDefining an import Import general 126 Creating an import™ To create an import from the Browser tree view Include general Defining an includeDefining include properties 127 ™ To create an include from the Browser tree view Defining a redefineCreating an include 128 129 Defining redefine propertiesRedefine general ™ To create a redefine from the Browser tree view Creating a redefineRedefine items 130 131 Defining business rule properties What is a business rule?Defining business rules Business rule general properties 133 Creating a business ruleBusiness rule expression property Type Description Example ™ To create a business rule from the List of Business Rules 134 Applying a business rule to an XML object 135 ™ To apply a business rule to an XML object 136 Column in the List of business rules 137 138 Working with an XML model 139 XML model check options Levels of problem severityChecking an XML model 140 Automatic correction Selecting objects in the diagramXML model object selection in the Check Model 141 142 Checking an XML model™ To check an XML model Selecting all or clearing all check boxes 143 Dockable result window ™ To display errors and warnings selected in the last checkDisplaying previously applied check options in an XML model 144 Contextual menu Making corrections based on XML model check resultsDisplay the Check toolbar 145 ™ To make manual corrections to an XML model Making manual corrections to an XML modelMaking automatic corrections to an XML model ™ To make automatic corrections to an XML model Existence of particle XML Model objects verified by Check ModelGroup particle check Invalid cardinality Undefined identifier Model checkIdentifier uniqueness Shortcut code uniqueness Missing namespaces Business rule check in an XSMData source check Business rule name and code uniqueness Existence of model File checkData source name and code uniqueness 150 Existence of external file location Entity checkEmbedded file name uniqueness Entity name and code uniqueness Complex type check Include checkSimple type check Element name and code uniqueness Element checkExistence of attribute Undefined type Undefined reference 154 155 Group checkGroup name and code uniqueness Attribute name and code uniqueness Attribute checkNotation check 156 Undefined notation Attribute group checkNotation name and code uniqueness Attribute group name and code uniqueness Redefine check Undefined schema location and namespaceImport check Existence of attributes Key name and code uniqueness Key checkExistence of component Existence of fields 160 KeyRef checkKeyRef name and code uniqueness 161 Unique checkUnique name and code uniqueness Extended object name and code uniqueness Extended object checkExtended link check Extended link name and code uniqueness Restriction check Replication checkExtension check Partial object replication 164 Simple type list checkExistence of facet Existence of items Simple type union checkAnnotation check 165 Defining data sources in an XML model Mapping objects in an XML modelUnderstanding object mapping 166 ™ To create a data source in an XML model Data source properties in an XML modelCreating a data source in an XML model 167 168 169 Mapping XML Model objects to PDM objectsMapping elements XML Model object PDM object Tool 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 Create From Sources and Generate Mapping tools 174 175 Modifying the mapping of an attribute™ To modify the mapping of an attribute Move Manipulating XML objects graphicallyLocal objects 176 ™ To convert a local object into a global object Global objectsExample converting a local object into a global object Drag and drop After conversions 178 Comparing and merging XML models 179 180 Generating an XML model from a Physical Data ModelGenerating XML Model objects PDM object Generated object in an XML model Generate new XML Generating and updating an XML modelXML model naming conventions 181 XML model Update existingDefining XML model generation options Clearing the Preserve modifications check box Check model before generation 183 184 Generating a new XML model from a PDM™ To generate a new XML model from a PDM 185 Updating an existing XML modelGenerating an XML model from a package Preserve modifications Result 186 ™ To update an existing XML model by generating from a PDMPreserve modifications Merging models 187 OOM 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 ™ To update an existing XML model by generating from an OOM 194 195 Creating an XML model report What is a report?Editing an XML model report ™ To create a model report 197 198 Inserting diagramLanguage in a template 199 200 201 Why generate an XDR file? Why generate an XSD file?Why generate a DTD file? Generating an XSD, a DTD or an XDR file Defining generation targets Defining generation parametersCheck model 203 Defining generation tasks Using the Move up or down arrowsDefining generation options 204 205 How to generate an XSD, a DTD or an XDR file?Parameter entities during DTD generation Model targeted with Generated file 206 207 How to reverse engineer an XSD, a DTD or an XDR file? What is reverse engineering?Why reverse engineer an XSD, a DTD or an XDR file? Reverse engineering an XSD, a DTD or an XDR file Reverse engineering to a new XML model Reverse engineering optionsReverse engineering target models Convert Unique References 210 211 Reverse engineering to an existing XML model 212 Auto-layout 213 214 Exchanging data with databases supporting XML 215 Why use XML in databases? 216 217 Generating an annotated schema for Microsoft SQL ServerMapping XML objects to PDM objects 218 219 220 221 Extended model definitions 222 Annotated schema preview 223 224 Reinforcing mapping with extended attributes 225 226 Annotation Description 227 228 229 230 Generating an annotated schema for Oracle™ To generate an annotated schema for Oracle 231 232 233 234 235 236 237 Generating a DAD file for IBM DB2™ To generate a DAD file for IBM DB2 Type of storage Type of mapping Description Generating a DAD file for IBM DB2 238 239 240 241 242 DAD file preview 243 244 Extended attribute Description 245 246 247 248 249 Generating SQL/XML queries™ To generate SQL/XML queries Generating SQL/XML queries 250 251 252 253 254 Generating from an XML model 255 256 Generation basicsTarget models parameters Generation option Description Generating from an XML model 257 258 259 Why generate an XML model from an XML model?Generating an XML model from an XML model Generating an XML model from an XML model 260 Generating a new XML model from an XML model 261 ™ To generate a new XML model from an XML model 262 Updating an existing XML model 263 264 265 266 267 268 XSM User’s Guide 269 XML language UnionUnique XPath Index 271 PowerDesigner 272 273 274 IBM DB2 275 276 277 XML 278