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   1  <xs:schema targetNamespace="http://ltsc.ieee.org/xsd/LOM"
   2             xmlns="http://ltsc.ieee.org/xsd/LOM"
   3             xmlns:xs="http://www.w3.org/2001/XMLSchema"
   4             elementFormDefault="qualified"
   5             version="IEEE LTSC LOM XML 1.0">
   6  
   7     <xs:annotation>
   8        <xs:documentation>
   9           This work is licensed under the Creative Commons Attribution-ShareAlike
  10           License.  To view a copy of this license, see the file license.txt,
  11           visit http://creativecommons.org/licenses/by-sa/2.0 or send a letter to
  12           Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
  13        </xs:documentation>
  14  
  15        <xs:documentation>
  16           This component schema defintion defines global element declarations for
  17           each of the data elements defined in the LOMv1.0 base schema.  This component
  18           schema definition is used to check for the uniqueness of elements declared
  19           to be unique within their parent elements by the presence of the
  20           "uniqueElementName" attribute.  The XML Schema constraint "unique" is used
  21           to enforce uniqueness constraints.
  22  
  23           Duplicate declarations are included as comments for completeness.  These
  24           declarations should remain commented out or they can be removed completely.
  25        </xs:documentation>
  26        <xs:documentation>
  27           This file has been modified by the Knowledge Media Institute of the 
  28           University Koblenz-Landau (http://iwm.uni-koblenz.de). It contains the
  29           following changes:
  30           1) Instead of "unique/strict.xsd" the schema "unique/loose.xsd" is imported 
  31              because this reflects what is said in 1484.12.3-2005, page 35 (section C.1.3)
  32           2) In all component XSDs the schemaLocation attribute was amended to the 
  33              xs:import and xs:include statements. This enables the usage of the schemas
  34              with tools which don't deal well with missing schemaLocation informations.
  35              
  36           This file is available at "http://iwm.uni-koblenz.de/xsd/IEEE-LOM/loose"
  37        </xs:documentation>
  38     </xs:annotation>
  39  
  40     <!-- Element declarations -->
  41  
  42     <!-- Duplicate declarations are included as comments. -->
  43  
  44     <!-- 1 General -->
  45     <xs:group name="general">
  46        <xs:sequence>
  47           <xs:element name="general" type="general">
  48              <xs:unique name="generalUnique">
  49                 <xs:selector xpath="*"/>
  50                 <xs:field xpath="@uniqueElementName"/>
  51              </xs:unique>
  52           </xs:element>
  53        </xs:sequence>
  54     </xs:group>
  55  
  56     <!-- 1.1 Identifier -->
  57     <xs:group name="identifier">
  58        <xs:sequence>
  59           <xs:element name="identifier" type="identifier">
  60              <xs:unique name="identifierUnique">
  61                 <xs:selector xpath="*"/>
  62                 <xs:field xpath="@uniqueElementName"/>
  63              </xs:unique>
  64           </xs:element>
  65        </xs:sequence>
  66     </xs:group>
  67  
  68     <!-- 1.1.1 Catalog -->
  69     <xs:group name="catalog">
  70        <xs:sequence>
  71           <xs:element name="catalog" type="catalog"/>
  72        </xs:sequence>
  73     </xs:group>
  74  
  75     <!-- 1.1.2 Entry -->
  76     <xs:group name="entry">
  77        <xs:sequence>
  78           <xs:element name="entry" type="entry"/>
  79        </xs:sequence>
  80     </xs:group>
  81  
  82     <!-- 1.2 Title -->
  83     <xs:group name="title">
  84        <xs:sequence>
  85           <xs:element name="title" type="title"/>
  86        </xs:sequence>
  87     </xs:group>
  88  
  89     <!-- 1.3 Language-->
  90     <xs:group name="language">
  91        <xs:sequence>
  92           <xs:element name="language" type="LanguageId"/>
  93        </xs:sequence>
  94     </xs:group>
  95  
  96     <!-- 1.4 Description -->
  97     <xs:group name="descriptionUnbounded">
  98        <xs:sequence>
  99           <xs:element name="description" type="LanguageString"/>
 100        </xs:sequence>
 101     </xs:group>
 102  
 103     <!-- 1.5 Keyword -->
 104     <xs:group name="keyword">
 105        <xs:sequence>
 106           <xs:element name="keyword" type="keyword"/>
 107        </xs:sequence>
 108     </xs:group>
 109  
 110     <!-- 1.6 Coverage -->
 111     <xs:group name="coverage">
 112        <xs:sequence>
 113           <xs:element name="coverage" type="coverage"/>
 114        </xs:sequence>
 115     </xs:group>
 116  
 117     <!-- 1.7 Structure -->
 118     <xs:group name="structure">
 119        <xs:sequence>
 120           <xs:element name="structure" type="structure">
 121              <xs:unique name="structureUnique">
 122                 <xs:selector xpath="*"/>
 123                 <xs:field xpath="@uniqueElementName"/>
 124              </xs:unique>
 125           </xs:element>
 126        </xs:sequence>
 127     </xs:group>
 128  
 129     <!-- 1.8 Aggregation Level -->
 130     <xs:group name="aggregationLevel">
 131        <xs:sequence>
 132           <xs:element name="aggregationLevel" type="aggregationLevel">
 133              <xs:unique name="aggregationLevelUnique">
 134                 <xs:selector xpath="*"/>
 135                 <xs:field xpath="@uniqueElementName"/>
 136              </xs:unique>
 137           </xs:element>
 138        </xs:sequence>
 139     </xs:group>
 140  
 141     <!-- 2 Life Cycle -->
 142     <xs:group name="lifeCycle">
 143        <xs:sequence>
 144           <xs:element name="lifeCycle" type="lifeCycle">
 145              <xs:unique name="lifeCycleUnique">
 146                 <xs:selector xpath="*"/>
 147                 <xs:field xpath="@uniqueElementName"/>
 148              </xs:unique>
 149           </xs:element>
 150        </xs:sequence>
 151     </xs:group>
 152  
 153     <!-- 2.1 Version -->
 154     <xs:group name="version">
 155        <xs:sequence>
 156           <xs:element name="version" type="version"/>
 157        </xs:sequence>
 158     </xs:group>
 159  
 160     <!-- 2.2 Status -->
 161     <xs:group name="status">
 162        <xs:sequence>
 163           <xs:element name="status" type="status">
 164              <xs:unique name="statusUnique">
 165                 <xs:selector xpath="*"/>
 166                 <xs:field xpath="@uniqueElementName"/>
 167              </xs:unique>
 168           </xs:element>
 169        </xs:sequence>
 170     </xs:group>
 171  
 172     <!-- 2.3 Contribute -->
 173     <xs:group name="contribute">
 174        <xs:sequence>
 175           <xs:element name="contribute" type="contribute">
 176              <xs:unique name="contributeUnique">
 177                 <xs:selector xpath="*"/>
 178                 <xs:field xpath="@uniqueElementName"/>
 179              </xs:unique>
 180           </xs:element>
 181        </xs:sequence>
 182     </xs:group>
 183  
 184     <!-- 2.3.1 Role -->
 185     <xs:group name="role">
 186        <xs:sequence>
 187           <xs:element name="role" type="role">
 188              <xs:unique name="roleUnique">
 189                 <xs:selector xpath="*"/>
 190                 <xs:field xpath="@uniqueElementName"/>
 191              </xs:unique>
 192           </xs:element>
 193        </xs:sequence>
 194     </xs:group>
 195  
 196     <!-- 2.3.2 Entity -->
 197     <xs:group name="entityUnbounded">
 198        <xs:sequence>
 199           <xs:element name="entity" type="VCard"/>
 200        </xs:sequence>
 201     </xs:group>
 202  
 203    <!-- 2.3.3 Date -->
 204    <xs:group name="date">
 205       <xs:sequence>
 206          <xs:element name="date" type="date">
 207             <xs:unique name="dateUnique">
 208                <xs:selector xpath="*"/>
 209                <xs:field xpath="@uniqueElementName"/>
 210             </xs:unique>
 211          </xs:element>
 212       </xs:sequence>
 213     </xs:group>
 214  
 215     <!-- 3 Meta-Metadata -->
 216     <xs:group name="metaMetadata">
 217        <xs:sequence>
 218           <xs:element name="metaMetadata" type="metaMetadata">
 219              <xs:unique name="metaMetadataUnique">
 220                 <xs:selector xpath="*"/>
 221                 <xs:field xpath="@uniqueElementName"/>
 222              </xs:unique>
 223           </xs:element>
 224        </xs:sequence>
 225     </xs:group>
 226  
 227     <!-- 3.1 Identifier
 228     <xs:group name="identifier">
 229        <xs:sequence>
 230           <xs:element name="identifier" type="identifier">
 231              <xs:unique name="identifierUnique">
 232                 <xs:selector xpath="*"/>
 233                 <xs:field xpath="@uniqueElementName"/>
 234              </xs:unique>
 235           </xs:element>
 236        </xs:sequence>
 237     </xs:group> -->
 238  
 239     <!-- 3.1.1 Catalog
 240     <xs:group name="catalog">
 241        <xs:sequence>
 242           <xs:element name="catalog" type="catalog"/>
 243        </xs:sequence>
 244     </xs:group> -->
 245  
 246     <!-- 3.1.2 Entry
 247     <xs:group name="entry">
 248        <xs:sequence>
 249           <xs:element name="entry" type="entry"/>
 250        </xs:sequence>
 251     </xs:group> -->
 252  
 253     <!-- 3.2 Contribute -->
 254     <xs:group name="contributeMeta">
 255        <xs:sequence>
 256           <xs:element name="contribute" type="contributeMeta">
 257              <xs:unique name="contributeMetaUnique">
 258                 <xs:selector xpath="*"/>
 259                 <xs:field xpath="@uniqueElementName"/>
 260              </xs:unique>
 261           </xs:element>
 262        </xs:sequence>
 263     </xs:group>
 264  
 265     <!-- 3.2.1 Role -->
 266     <xs:group name="roleMeta">
 267        <xs:sequence>
 268           <xs:element name="role" type="roleMeta">
 269              <xs:unique name="roleMetaUnique">
 270                 <xs:selector xpath="*"/>
 271                 <xs:field xpath="@uniqueElementName"/>
 272              </xs:unique>
 273           </xs:element>
 274        </xs:sequence>
 275     </xs:group>
 276  
 277     <!-- 3.2.2 Entity
 278     <xs:group name="entityUnbounded">
 279        <xs:sequence>
 280           <xs:element name="entity" type="VCard"/>
 281        </xs:sequence>
 282     </xs:group> -->
 283  
 284     <!-- 3.2.3 Date
 285     <xs:group name="date">
 286        <xs:sequence>
 287           <xs:element name="date" type="date">
 288              <xs:unique name="dateUnique">
 289                 <xs:selector xpath="*"/>
 290                 <xs:field xpath="@uniqueElementName"/>
 291              </xs:unique>
 292           </xs:element>
 293        </xs:sequence>
 294     </xs:group> -->
 295  
 296     <!-- 3.3 Metadata Schema -->
 297     <xs:group name="metadataSchema">
 298        <xs:sequence>
 299           <xs:element name="metadataSchema" type="metadataSchema"/>
 300        </xs:sequence>
 301     </xs:group>
 302  
 303     <!-- 3.4 Language
 304     <xs:group name="language">
 305        <xs:sequence>
 306           <xs:element name="language" type="LanguageId"/>
 307        </xs:sequence>
 308     </xs:group> -->
 309  
 310     <!-- 4 Technical -->
 311     <xs:group name="technical">
 312        <xs:sequence>
 313           <xs:element name="technical" type="technical">
 314              <xs:unique name="technicalUnique">
 315                 <xs:selector xpath="*"/>
 316                 <xs:field xpath="@uniqueElementName"/>
 317              </xs:unique>
 318           </xs:element>
 319        </xs:sequence>
 320     </xs:group>
 321  
 322     <!-- 4.1 Format -->
 323    <xs:group name="format">
 324        <xs:sequence>
 325           <xs:element name="format" type="format"/>
 326        </xs:sequence>
 327     </xs:group>
 328  
 329     <!-- 4.2 Size -->
 330     <xs:group name="size">
 331        <xs:sequence>
 332           <xs:element name="size" type="size"/>
 333        </xs:sequence>
 334     </xs:group>
 335  
 336     <!-- 4.3 Location -->
 337     <xs:group name="location">
 338        <xs:sequence>
 339           <xs:element name="location" type="location"/>
 340        </xs:sequence>
 341     </xs:group>
 342  
 343     <!-- 4.4 Requirement -->
 344     <xs:group name="requirement">
 345        <xs:sequence>
 346           <xs:element name="requirement" type="requirement"/>
 347        </xs:sequence>
 348     </xs:group>
 349  
 350     <!-- 4.4.1 OrComposite -->
 351     <xs:group name="orComposite">
 352        <xs:sequence>
 353           <xs:element name="orComposite" type="orComposite">
 354              <xs:unique name="orCompositeUnique">
 355                 <xs:selector xpath="*"/>
 356                 <xs:field xpath="@uniqueElementName"/>
 357              </xs:unique>
 358           </xs:element>
 359        </xs:sequence>
 360     </xs:group>
 361  
 362     <!-- 4.4.1.1 Type -->
 363     <xs:group name="type">
 364        <xs:sequence>
 365           <xs:element name="type" type="type">
 366              <xs:unique name="typeUnique">
 367                 <xs:selector xpath="*"/>
 368                 <xs:field xpath="@uniqueElementName"/>
 369              </xs:unique>
 370           </xs:element>
 371        </xs:sequence>
 372     </xs:group>
 373  
 374     <!-- 4.4.1.2 Name -->
 375     <xs:group name="name">
 376        <xs:sequence>
 377           <xs:element name="name" type="name">
 378              <xs:unique name="nameUnique">
 379                 <xs:selector xpath="*"/>
 380                 <xs:field xpath="@uniqueElementName"/>
 381              </xs:unique>
 382           </xs:element>
 383        </xs:sequence>
 384     </xs:group>
 385  
 386     <!-- 4.4.1.3 Minimum Version -->
 387     <xs:group name="minimumVersion">
 388        <xs:sequence>
 389           <xs:element name="minimumVersion" type="minimumVersion"/>
 390        </xs:sequence>
 391     </xs:group>
 392  
 393     <!-- 4.4.1.4 Maximum Version -->
 394     <xs:group name="maximumVersion">
 395        <xs:sequence>
 396           <xs:element name="maximumVersion" type="maximumVersion"/>
 397        </xs:sequence>
 398      </xs:group>
 399  
 400     <!-- 4.5 Installation Remarks -->
 401     <xs:group name="installationRemarks">
 402        <xs:sequence>
 403           <xs:element name="installationRemarks" type="installationRemarks"/>
 404        </xs:sequence>
 405     </xs:group>
 406  
 407     <!-- 4.6 Other Platform Requirements -->
 408     <xs:group name="otherPlatformRequirements">
 409        <xs:sequence>
 410           <xs:element name="otherPlatformRequirements" type="otherPlatformRequirements"/>
 411        </xs:sequence>
 412     </xs:group>
 413  
 414     <!-- 4.7 Duration -->
 415     <xs:group name="duration">
 416        <xs:sequence>
 417           <xs:element name="duration" type="duration">
 418              <xs:unique name="durationUnique">
 419                 <xs:selector xpath="*"/>
 420                 <xs:field xpath="@uniqueElementName"/>
 421              </xs:unique>
 422           </xs:element>
 423        </xs:sequence>
 424     </xs:group>
 425  
 426     <!-- 5 Educational -->
 427     <xs:group name="educational">
 428        <xs:sequence>
 429           <xs:element name="educational" type="educational">
 430              <xs:unique name="educationalUnique">
 431                 <xs:selector xpath="*"/>
 432                 <xs:field xpath="@uniqueElementName"/>
 433              </xs:unique>
 434           </xs:element>
 435        </xs:sequence>
 436     </xs:group>
 437  
 438     <!-- 5.1 Interactivity Type -->
 439     <xs:group name="interactivityType">
 440        <xs:sequence>
 441           <xs:element name="interactivityType" type="interactivityType">
 442              <xs:unique name="interactivityTypeUnique">
 443                 <xs:selector xpath="*"/>
 444                 <xs:field xpath="@uniqueElementName"/>
 445              </xs:unique>
 446           </xs:element>
 447        </xs:sequence>
 448     </xs:group>
 449  
 450     <!-- 5.2 Learning Resource Type -->
 451     <xs:group name="learningResourceType">
 452        <xs:sequence>
 453           <xs:element name="learningResourceType" type="learningResourceType">
 454              <xs:unique name="learningResourceTypeUnique">
 455                 <xs:selector xpath="*"/>
 456                 <xs:field xpath="@uniqueElementName"/>
 457              </xs:unique>
 458           </xs:element>
 459        </xs:sequence>
 460     </xs:group>
 461  
 462     <!-- 5.3 Interactivity Level -->
 463     <xs:group name="interactivityLevel">
 464        <xs:sequence>
 465           <xs:element name="interactivityLevel" type="interactivityLevel">
 466              <xs:unique name="interactivityLevelUnique">
 467                 <xs:selector xpath="*"/>
 468                 <xs:field xpath="@uniqueElementName"/>
 469              </xs:unique>
 470           </xs:element>
 471        </xs:sequence>
 472     </xs:group>
 473  
 474     <!-- 5.4 Semantic Density -->
 475     <xs:group name="semanticDensity">
 476        <xs:sequence>
 477           <xs:element name="semanticDensity" type="semanticDensity">
 478              <xs:unique name="semanticDensityUnique">
 479                 <xs:selector xpath="*"/>
 480                 <xs:field xpath="@uniqueElementName"/>
 481              </xs:unique>
 482           </xs:element>
 483        </xs:sequence>
 484     </xs:group>
 485  
 486     <!-- 5.5 Intended End User Role -->
 487     <xs:group name="intendedEndUserRole">
 488        <xs:sequence>
 489           <xs:element name="intendedEndUserRole" type="intendedEndUserRole">
 490              <xs:unique name="intendedEndUserRoleUnique">
 491                 <xs:selector xpath="*"/>
 492                 <xs:field xpath="@uniqueElementName"/>
 493              </xs:unique>
 494           </xs:element>
 495        </xs:sequence>
 496     </xs:group>
 497  
 498     <!-- 5.6 Context -->
 499     <xs:group name="context">
 500        <xs:sequence>
 501           <xs:element name="context" type="context">
 502              <xs:unique name="contextUnique">
 503                 <xs:selector xpath="*"/>
 504                 <xs:field xpath="@uniqueElementName"/>
 505              </xs:unique>
 506           </xs:element>
 507        </xs:sequence>
 508     </xs:group>
 509  
 510     <!-- 5.7 Typical Age Range -->
 511     <xs:group name="typicalAgeRange">
 512        <xs:sequence>
 513           <xs:element name="typicalAgeRange" type="typicalAgeRange"/>
 514        </xs:sequence>
 515     </xs:group>
 516  
 517     <!-- 5.8 Difficulty -->
 518     <xs:group name="difficulty">
 519        <xs:sequence>
 520           <xs:element name="difficulty" type="difficulty">
 521              <xs:unique name="difficultyUnique">
 522                 <xs:selector xpath="*"/>
 523                 <xs:field xpath="@uniqueElementName"/>
 524              </xs:unique>
 525           </xs:element>
 526        </xs:sequence>
 527     </xs:group>
 528  
 529     <!-- 5.9 Typical Learning Time -->
 530     <xs:group name="typicalLearningTime">
 531        <xs:sequence>
 532           <xs:element name="typicalLearningTime" type="typicalLearningTime">
 533              <xs:unique name="typicalLearningTimeUnique">
 534                 <xs:selector xpath="*"/>
 535                 <xs:field xpath="@uniqueElementName"/>
 536              </xs:unique>
 537           </xs:element>
 538        </xs:sequence>
 539     </xs:group>
 540  
 541     <!-- 5.10 Description
 542     <xs:group name="descriptionUnbounded">
 543        <xs:sequence>
 544           <xs:element name="description" type="LanguageString"/>
 545        </xs:sequence>
 546     </xs:group> -->
 547  
 548     <!-- 5.11 Language
 549     <xs:group name="language">
 550        <xs:sequence>
 551           <xs:element name="language" type="LanguageId"/>
 552        </xs:sequence>
 553     </xs:group>-->
 554  
 555     <!-- 6 Rights -->
 556     <xs:group name="rights">
 557        <xs:sequence>
 558           <xs:element name="rights" type="rights">
 559              <xs:unique name="rightsUnique">
 560                 <xs:selector xpath="*"/>
 561                 <xs:field xpath="@uniqueElementName"/>
 562              </xs:unique>
 563           </xs:element>
 564        </xs:sequence>
 565     </xs:group>
 566  
 567     <!-- 6.1 Cost -->
 568     <xs:group name="cost">
 569        <xs:sequence>
 570           <xs:element name="cost" type="cost">
 571              <xs:unique name="costUnique">
 572                 <xs:selector xpath="*"/>
 573                 <xs:field xpath="@uniqueElementName"/>
 574              </xs:unique>
 575           </xs:element>
 576        </xs:sequence>
 577     </xs:group>
 578  
 579     <!-- 6.2 Copyright and Other Restrictions -->
 580     <xs:group name="copyrightAndOtherRestrictions">
 581        <xs:sequence>
 582           <xs:element name="copyrightAndOtherRestrictions" type="copyrightAndOtherRestrictions">
 583              <xs:unique name="copyrightAndOtherRestrictionsUnique">
 584                 <xs:selector xpath="*"/>
 585                 <xs:field xpath="@uniqueElementName"/>
 586              </xs:unique>
 587           </xs:element>
 588        </xs:sequence>
 589     </xs:group>
 590  
 591     <!-- 6.3 Description -->
 592     <xs:group name="description">
 593        <xs:sequence>
 594           <xs:element name="description" type="description"/>
 595        </xs:sequence>
 596     </xs:group>
 597  
 598     <!-- 7 Relation -->
 599     <xs:group name="relation">
 600        <xs:sequence>
 601           <xs:element name="relation" type="relation">
 602              <xs:unique name="relationUnique">
 603                 <xs:selector xpath="*"/>
 604                 <xs:field xpath="@uniqueElementName"/>
 605              </xs:unique>
 606           </xs:element>
 607        </xs:sequence>
 608     </xs:group>
 609  
 610     <!-- 7.1 Kind -->
 611     <xs:group name="kind">
 612        <xs:sequence>
 613           <xs:element name="kind" type="kind">
 614              <xs:unique name="kindUnique">
 615                 <xs:selector xpath="*"/>
 616                 <xs:field xpath="@uniqueElementName"/>
 617              </xs:unique>
 618           </xs:element>
 619        </xs:sequence>
 620     </xs:group>
 621  
 622     <!-- 7.2 Resource -->
 623     <xs:group name="resource">
 624        <xs:sequence>
 625           <xs:element name="resource" type="resource"/>
 626        </xs:sequence>
 627     </xs:group>
 628  
 629     <!-- 7.2.1 Identifier
 630     <xs:group name="identifier">
 631        <xs:sequence>
 632           <xs:element name="identifier" type="identifier">
 633              <xs:unique name="identifierUnique">
 634                 <xs:selector xpath="*"/>
 635                 <xs:field xpath="@uniqueElementName"/>
 636              </xs:unique>
 637           </xs:element>
 638        </xs:sequence>
 639     </xs:group> -->
 640  
 641     <!-- 7.2.1.1 Catalog
 642     <xs:group name="catalog">
 643        <xs:sequence>
 644           <xs:element name="catalog" type="catalog"/>
 645        </xs:sequence>
 646     </xs:group> -->
 647  
 648     <!-- 7.2.1.2 Entry
 649     <xs:group name="entry">
 650        <xs:sequence>
 651           <xs:element name="entry" type="entry"/>
 652        </xs:sequence>
 653     </xs:group> -->
 654  
 655     <!-- 7.2.2 Description
 656     <xs:group name="description">
 657        <xs:sequence>
 658           <xs:element name="description" type="description"/>
 659        </xs:sequence>
 660     </xs:group> -->
 661  
 662     <!-- 8 Annotation -->
 663     <xs:group name="annotation">
 664        <xs:sequence>
 665           <xs:element name="annotation" type="annotation">
 666              <xs:unique name="annotationUnique">
 667                 <xs:selector xpath="*"/>
 668                 <xs:field xpath="@uniqueElementName"/>
 669              </xs:unique>
 670           </xs:element>
 671        </xs:sequence>
 672     </xs:group>
 673  
 674     <!-- 8.1 Entity -->
 675     <xs:group name="entity">
 676        <xs:sequence>
 677           <xs:element name="entity" type="entity"/>
 678        </xs:sequence>
 679     </xs:group>
 680  
 681     <!-- 8.2 Date
 682     <xs:group name="date">
 683        <xs:sequence>
 684           <xs:element name="date" type="date">
 685              <xs:unique name="dateUnique">
 686                 <xs:selector xpath="*"/>
 687                 <xs:field xpath="@uniqueElementName"/>
 688              </xs:unique>
 689           </xs:element>
 690        </xs:sequence>
 691     </xs:group> -->
 692  
 693     <!-- 8.3 Description
 694     <xs:group name="description">
 695        <xs:sequence>
 696           <xs:element name="description" type="description"/>
 697        </xs:sequence>
 698     </xs:group> -->
 699  
 700     <!-- 9 Classification -->
 701     <xs:group name="classification">
 702        <xs:sequence>
 703           <xs:element name="classification" type="classification">
 704              <xs:unique name="classificationUnique">
 705                 <xs:selector xpath="*"/>
 706                 <xs:field xpath="@uniqueElementName"/>
 707              </xs:unique>
 708           </xs:element>
 709        </xs:sequence>
 710     </xs:group>
 711  
 712     <!-- 9.1 Purpose -->
 713     <xs:group name="purpose">
 714        <xs:sequence>
 715           <xs:element name="purpose" type="purpose">
 716              <xs:unique name="purposeUnique">
 717                 <xs:selector xpath="*"/>
 718                 <xs:field xpath="@uniqueElementName"/>
 719              </xs:unique>
 720           </xs:element>
 721        </xs:sequence>
 722     </xs:group>
 723  
 724     <!-- 9.2 Taxon Path -->
 725     <xs:group name="taxonPath">
 726        <xs:sequence>
 727           <xs:element name="taxonPath" type="taxonPath">
 728              <xs:unique name="taxonPathUnique">
 729                 <xs:selector xpath="*"/>
 730                 <xs:field xpath="@uniqueElementName"/>
 731              </xs:unique>
 732           </xs:element>
 733        </xs:sequence>
 734     </xs:group>
 735  
 736     <!-- 9.2.1 Source -->
 737     <xs:group name="source">
 738        <xs:sequence>
 739           <xs:element name="source" type="source"/>
 740        </xs:sequence>
 741     </xs:group>
 742  
 743     <!-- 9.2.2 Taxon -->
 744     <xs:group name="taxon">
 745        <xs:sequence>
 746           <xs:element name="taxon" type="taxon">
 747              <xs:unique name="taxonUnique">
 748                 <xs:selector xpath="*"/>
 749                 <xs:field xpath="@uniqueElementName"/>
 750              </xs:unique>
 751           </xs:element>
 752        </xs:sequence>
 753     </xs:group>
 754  
 755     <!-- 9.2.2.1 Id -->
 756     <xs:group name="id">
 757        <xs:sequence>
 758           <xs:element name="id" type="id"/>
 759        </xs:sequence>
 760     </xs:group>
 761  
 762     <!-- 9.2.2.2 Entry -->
 763     <xs:group name="entryTaxon">
 764        <xs:sequence>
 765           <xs:element name="entry" type="entryTaxon"/>
 766        </xs:sequence>
 767     </xs:group>
 768  
 769     <!-- 9.3 Description
 770     <xs:group name="description">
 771        <xs:sequence>
 772           <xs:element name="description" type="description"/>
 773        </xs:sequence>
 774     </xs:group> -->
 775  
 776     <!-- 9.4 Keyword
 777     <xs:group name="keyword">
 778        <xs:sequence>
 779           <xs:element name="keyword" type="keyword"/>
 780        </xs:sequence>
 781     </xs:group> -->
 782  
 783  </xs:schema>