Defining identity constraints | Sybase XML manual

Defining identity constraints

For example:

Generated schema:

The KEYREF_UNIGOLD keyRef, defined on the product element, by reference to the UNIGOLD unique constraint, specifies that the gold attribute must be unique or null within the component_2 element, as well as it must be unique or null within the component_1 element (See UNIGOLD).

To display a keyRef property sheet, double-click its name or its icon in the

Browser tree view.

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Sybase XML manual Defining identity constraints

Contents

Sybase PowerDesigner 11.1 Last Revised June Contents Managing external shortcuts through references and data 100101 102 Working with an XML model 139 Why reverse engineer an XSD, a DTD or an XDR How to reverse engineer an XSD, a DTD or an XDR169 Mapping XML Model objects to OOM objects 171 Exchanging data with databases supporting XML 215 Vii Viii Documentation primer SubjectAudience Conceptual Data Model User’s Guide To work with the CDM Physical Data Model User’s GuideObject Oriented Model Getting Started 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 Opening an existing XML model Detaching an XML model from the workspace™ To open an existing XML model ™ To detach an XML model from a workspace Saving and closing an XML model Saving an XMLModel 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 Defining simple type properties Modifying the simple type display preferenceCreating a simple type ™ 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 Complex type mapping properties Complex TypeSources 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 Defining simple content properties Simple content™ To create a simple content General property Defining complex content properties Complex content™ To create a complex content General properties Defining derivations Deriving by extensionDerivation in element property sheet 102 103 Defining extension™ To define a derivation by extension 104 Deriving by restrictionRestriction on a simple type Defining restriction facets Restriction generalRestriction detail 105 Facet general RestrictionEnumerations 106 Restriction patterns 107 108 Creating a restriction on a simple type™ To create a restriction on a simple type 109 110 Restriction on a complex type Enumeration and Pattern facets™ To create a restriction on a complex type 111 Deriving by list 112 113 Deriving by union™ To define a simple type derivation by list Union general Union types™ To define a simple type derivation by union 114 Defining annotations 115 Defining annotation properties Defining documentation propertiesAnnotation general property Annotation items properties Documentation content Defining application information propertiesDocumentation general 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 Defining entities Defining entity properties122 Entity name Reference Value 123 Creating an entity™ To create an entity from the Browser tree view 124 Defining import, include and redefine Defining an importDefining import properties Import general 126 Creating an import™ To create an import from the Browser tree view Defining an include Defining include propertiesInclude general 127 Defining a redefine Creating an include™ To create an include from the Browser tree view 128 129 Defining redefine propertiesRedefine general Creating a redefine Redefine items™ To create a redefine from the Browser tree view 130 131 What is a business rule? Defining business rulesDefining business rule properties Business rule general properties Creating a business rule Business rule expression property133 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 Levels of problem severity Checking an XML modelXML model check options 140 Selecting objects in the diagram XML model object selection in the Check ModelAutomatic correction 141 142 Checking an XML model™ To check an XML model Selecting all or clearing all check boxes 143 ™ To display errors and warnings selected in the last check Displaying previously applied check options in an XML modelDockable result window 144 Making corrections based on XML model check results Display the Check toolbarContextual menu 145 Making manual corrections to an XML model Making automatic corrections to an XML model™ To make manual corrections to an XML model ™ To make automatic corrections to an XML model XML Model objects verified by Check Model Group particle checkExistence of particle Invalid cardinality Model check Identifier uniquenessUndefined identifier Shortcut code uniqueness Business rule check in an XSM Data source checkMissing namespaces Business rule name and code uniqueness File check Data source name and code uniquenessExistence of model 150 Entity check Embedded file name uniquenessExistence of external file location Entity name and code uniqueness Complex type check Include checkSimple type check Element check Existence of attributeElement name and code uniqueness Undefined type Undefined reference 154 155 Group checkGroup name and code uniqueness Attribute check Notation checkAttribute name and code uniqueness 156 Attribute group check Notation name and code uniquenessUndefined notation Attribute group name and code uniqueness Undefined schema location and namespace Import checkRedefine check Existence of attributes Key check Existence of componentKey name and code uniqueness Existence of fields 160 KeyRef checkKeyRef name and code uniqueness 161 Unique checkUnique name and code uniqueness Extended object check Extended link checkExtended object name and code uniqueness Extended link name and code uniqueness Replication check Extension checkRestriction check Partial object replication 164 Simple type list checkExistence of facet Simple type union check Annotation checkExistence of items 165 Mapping objects in an XML model Understanding object mappingDefining data sources in an XML model 166 Data source properties in an XML model Creating a data source in an XML model™ To create a data source in an XML model 167 168 Mapping XML Model objects to PDM objects Mapping elements169 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 Manipulating XML objects graphically Local objectsMove 176 Global objects Example converting a local object into a global object™ To convert a local object into a global object Drag and drop After conversions 178 Comparing and merging XML models 179 Generating an XML model from a Physical Data Model Generating XML Model objects180 PDM object Generated object in an XML model Generating and updating an XML model XML model naming conventionsGenerate new XML 181 Update existing Defining XML model generation optionsXML model 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 Updating an existing XML model Generating an XML model from a package185 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 What is a report? Editing an XML model reportCreating an XML model report ™ To create a model report 197 198 Inserting diagramLanguage in a template 199 200 201 Why generate an XSD file? Why generate a DTD file?Why generate an XDR file? Generating an XSD, a DTD or an XDR file Defining generation parameters Check modelDefining generation targets 203 Using the Move up or down arrows Defining generation optionsDefining generation tasks 204 How to generate an XSD, a DTD or an XDR file? Parameter entities during DTD generation205 Model targeted with Generated file 206 207 What is reverse engineering? Why reverse engineer an XSD, a DTD or an XDR file?How to reverse engineer an XSD, a DTD or an XDR file? Reverse engineering an XSD, a DTD or an XDR file Reverse engineering options Reverse engineering target modelsReverse engineering to a new XML model 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 Generating a DAD file for IBM DB2 ™ To generate a DAD file for IBM DB2237 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 Generation basics Target models parameters256 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 Union UniqueXML language XPath Index 271 PowerDesigner 272 273 274 IBM DB2 275 276 277 XML 278