1、BS 7666-2:2006Spatial datasets for geographical referencing Part 2: Specification for a land and property gazetteerICS 07.040;35.240.70NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this
2、document indicates when the document was last issued. BSI July 2006ISBN 0 580 48723 7The following BSI references relate to the work on this standard:Committee reference IST/36Draft for comment 05/30127195 DCPublication historyFirst published, June 1994Second edition, September 2000Third edition, Ju
3、ly 2006Amendments issued since publicationAmd. no. Date Text affectedBS 7666-2:2006 BSI 2006 iBS 7666-2:2006ContentsForeword ii1 Scope 12 Normative references 13 Terms and definitions 14 Land and property gazetteer requirements 25 Gazetteer metadata 46 Basic land and property units 67 Land and prope
4、rty identifiers 98 BLPU provenance 149 BLPU extents 1410 BLPU extent polygon 1511 Data quality 17AnnexesAnnex A (normative) Checklist for conformity 18Annex B (normative) UML model 19Annex C (informative) Recommended coding schemes 21Annex D (informative) Examples 22List of figuresFigure 1 Land and
5、property gazetteer model 3Figure B.1 UML for a land and property gazetteer 19List of tablesTable 1 Gazetteer metadata 5Table 2 Attributes of a BLPU 7Table 3 Representative point code 8Table 4 BLPU logical status 8Table 5 Attributes of an LPI 10Table 6 Attributes of an addressable object 10Table 7 LP
6、I logical status 12Table 8 Attributes of a BLPU provenance 13Table 9 Allowable BLPU provenance codes 14Table 10 Attributes of a BLPU extent 15Table 11 Attributes of a BLPU extent polygon 16Table C.1 BLPU classification codes 21Table C.2 BLPU state codes 21Table C.3 Language codes 21Summary of pagesT
7、his document comprises a front cover, an inside front cover, pages i and iv, pages 1 to 23, an inside back cover and a back cover.ii BSI 2006BS 7666-2:2006ForewordPublishing informationThis part of BS 7666 was published by BSI and came into effect on 28 July 2006. It was prepared by Technical Commit
8、tee IST/36, Geographic information. A list of organizations represented on this committee can be obtained on request to its secretary.Information about this documentBS 7666 was originally published over the period 1994 to 1996 in four parts.These four parts were revised separately over the period 20
9、00 to 2002. During 2004 to 2005, all the parts were revised together, with a new Part 0: General model for gazetteers and spatial referencing being added. This provides a common structure for gazetteers of any class of geographic object.BS 7666 now comprises the following parts:Part 0: General model
10、 for spatial referencing;Part 1: Specification for a street gazetteer;Part 2: Specification for a land and property gazetteer;Part 5: Specification for a delivery point gazetteer.These parts supersede BS 7666-1:2000, BS 7666-2:2000, BS 7666-3:2000 and BS 7666-4:2002. The new Part 0 has subsumed Part
11、 3: Specification for addresses. Part 1 has subsumed Part 4: Specification for recording public rights of way but in other respects is similar in scope to that published previously. The scope of Part 2 is largely unchanged. Part 5 is new in scope. Parts BS 7666-1:2000, BS 7666-2:2000, BS 7666-3:2000
12、 and BS 7666-4:2002 are now withdrawn. Thus Parts 3 and 4 will not form part of the standard although there will now be a Part 5. Renumbering has not taken place to avoid any confusion with the withdrawn standards.The main changes that have been made to this Part of the Standard are as follows: the
13、structure, content and terminology are made consistent with new general model in Part 0;the structure and content are made consistent with the revised Part 1;the addition of a requirement for gazetteer metadata;the addition of a facility for recording descriptive identifiers in multiple languages;th
14、e addition of a facility for classification of BLPUs;the addition of a facility for cross-referencing to other datasets;the addition of an identifier for an LPI; change to the role of provenance;field lengths are no longer prescribed;addition of a requirement for a data quality report;other minor ch
15、anges in the light of experience of use. BSI 2006 iiiBS 7666-2:2006Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general in
16、formative material is presented in smaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British
17、 Standard cannot confer immunity from legal obligations.iv BSI 2006BS 7666-2:2006IntroductionThis part of BS 7666 is designed to facilitate the creation and maintenance of gazetteers of varying scope, from specialist interest in a restricted area to universal coverage for general use. It has been de
18、signed in the expectation that such gazetteers will increasingly need to be matched, merged and cross-referenced in order to promote access to, and sharing of, related land and property data.A key design principle is that the application of this part of the standard, in conjunction with the other pa
19、rts of BS 7666, will help to establish a common set of identifiers for use across a range of applications.An external application will reference a basic land and property unit in the gazetteer via its unique property reference number. The unique property reference number or other identifier may be u
20、sed to cross-refer a basic land and property unit to other information held external to the gazetteer. Examples are revenue, planning, distribution and utility records. This enables data from different sources to be co-related or interchanged via the gazetteer, and requires the currency of the data
21、to be maintained after initial set-up. BSI 2006 1BS 7666-2:20061 ScopeThis part of BS 7666 specifies the logical data structure for a gazetteer of land and property, consistent with Part 0 of this standard. It is based upon the concept of a basic land and property unit (BLPU), and specifies the data
22、 to be recorded and maintained in a gazetteer. It also specifies the way in which the boundary of a BLPU may be represented and linked to the gazetteer. It does not provide a database design or a transfer format.This part of BS 7666 is intended for use by those compiling land and property gazetteers
23、, for a range of purposes including property records and addressing. It enables different users of land and property information to link different land and property identifiers (LPI) via a common unique property reference number (UPRN).A checklist for verification of conformity is given in Annex A.2
24、 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the reference cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 7666-0, Spatial datasets
25、 for geographical referencing Part 0: General model for gazetters and spatial referencing.BS 7666-1, Spatial datasets for geographical referencing Part 1: Specification for a street gazetteer.BS ISO 8601, Data elements and interchange formats Information interchange Representation of dates and times
26、.3 Terms and definitionsFor the purposes of this part of BS 7666, the terms and definitions given in BS 7666-0 and the following apply.3.1 addressable objectgeographical object that may be identified and referenced by means of one or more addresses3.2 basic land and property unit BLPUarea of land, p
27、roperty or structure of fixed location having uniform occupation, ownership or function3.3 BLPU provenancebasis for the existence and extent of a basic land and property unitNOTE Provenance may be determined by e.g. land title, tenancy or rental agreement, physical features, occupancy or use.2 BSI 2
28、006BS 7666-2:20063.4 land and property identifier LPIstructured text entry that identifies a basic land and property unit3.5 land and property gazetteerrecord of instances of basic land and property units covering a defined geographic area3.6 primary addressable objectaddressable object that can be
29、addressed without reference to another addressable object3.7 secondary addressable objectaddressable object that is addressed by reference to a primary addressable object3.8 unique property reference number UPRNunique numeric identifier for a basic land and property unit4 Land and property gazetteer
30、 requirements4.1 Land and property gazetteer scopeA land and property gazetteer shall contain all instances of BLPUs within its territory of use, according to a defined scope.NOTE 1 Examples of gazetteer scopes are “Registered land titles in England and Wales”, “Occupied residential property units a
31、nd commercial premises in Redlands District Council area”, “Land and property owned or used by the Acme Industrial Corporation in Great Britain”.NOTE 2 The land and property gazetteer may include BLPUs relating to any specified time period. BLPUs that no longer exist may be recorded in the gazetteer
32、.4.2 Basic land and property unitEach BLPU shall be identified by one or more Land and Property Identifier (LPI). The LPI shall contain a spatial reference as defined in Part 0 of this standard. NOTE 1 A BLPU may have several LPIs, e.g. in different languages, or where a historic name that is no lon
33、ger used is recorded.A BLPU may be related to other BLPUs (e.g. a numbered flat within a block). NOTE 2 BLPUs may overlap, e.g. railway arches and subterranean public conveniences. A BLPU may be an aggregation of other BLPUs or a part of another BLPU. For example, a farm may be an aggregation of lan
34、d parcels which are themselves BLPUs, or a flat could be a subdivision of a block of flats which is itself a BLPU. BSI 2006 3BS 7666-2:20064.3 BLPU extentA BLPU may be represented by one or more extents, each representing a different BLPU provenance. NOTE 1 Examples of BLPU provenances are ownership
35、, tenancy, occupancy and usage.BLPU extents may be included in the gazetteer. A BLPU extent may be discontinuous. A BLPU extent recorded in the gazetteer shall be described by one or more BLPU extent polygons. NOTE 2 A BLPU extent polygon may be a “hole” cut out from another polygon forming part of
36、the same BLPU extent.4.4 Relationship between classesThe relationships between BLPU, LPI, BLPU provenance, BLPU extent and BLPU extent polygon are shown in Figure 1.Figure 1 Land and property gazetteer modelNOTE The diagramming conventions used in this diagram are explained in Annex B. A land and pr
37、operty gazetteer is a specialization of a gazetteer, and a BLPU is a specialization of a location, as defined in Part 0 of this standard. 1nLand andProperty GazetteerBLPU LocationLPIGazetteergazetteerspecializationlocation specializationaggregationBLPUProvenanceBLPU Extent1nSpatial ReferenceBLPU Ext
38、ent Polygon0n4 BSI 2006BS 7666-2:20065 Gazetteer metadata5.1 Mandatory elementsA land and property gazetteer shall have the following mandatory (M) metadata elements:a) name: name of the gazetteer;b) scope: description of the content of the gazetteer, including the rules for inclusion or exclusion,
39、e.g. “occupied residential and commercial property”;c) territory of use: geographic domain of the street gazetteer, e.g. Great Britain, England and Wales, Scotland, Northern Ireland;d) gazetteer owner: the organization or organizations with overall responsibility for the gazetteer, e.g. “the Local G
40、overnment Information House” or “DNA-Scotland”;e) custodian: organization or organizations responsible for the compilation and maintenance of the data in the gazetteer, e.g. the Land and Property Gazetteer Custodian;f) coordinate system: coordinate reference system used in the gazetteer to describe
41、position, e.g. National Grid (NG) of Great Britain, or Irish Transverse Mercator (ITM);g) current date: the date at which the gazetteer can be considered to be current.5.2 Optional elementsA land and property gazetteer shall have the following optional (O) metadata elements:a) coordinate axis units:
42、 unit of measure of coordinates, e.g. metres;b) metadata date: date of last update of metadata; c) BLPU classification scheme: the classification scheme used in the gazetteer;d) state coding scheme: the coding scheme used to define the logical state of a BLPU recorded in the gazetteer;NOTE An exampl
43、e coding scheme is given in C.2 in Annex C.e) language: the language(s) used in the gazetteer for names, identified by a three letter code as specified in BS ISO 639-2 (see Annex C);NOTE Where no language is specified, a default of English is assumed.f) character set: any non-English character set(s
44、) used to record entries in the gazetteer, e.g. Gaelic;g) external cross-referencing scheme: any external cross-referencing scheme used in the gazetteer to reference the BLPU, other than that defined in this Standard, e.g. Ordnance Survey TOIDs (topographic identifiers). BSI 2006 5BS 7666-2:20065.3
45、StructureMetadata about the gazetteer shall be structured in accordance with Table 1.NOTE 1 A UML model is shown in Annex B which also shows the relationships with the other classes. An example metadata set is given in Annex D.NOTE 2 As appropriate, additional attributes can be added by the user in
46、the context of a particular application.All dates shall be recorded where appropriate as numeric values in accordance with BS ISO 8601, either in the basic format (YYYYMMDD) or in the extended format (YYYY-MM-DD), where YYYY is the year, MM is the month, and DD is the day.Table 1 Gazetteer metadataN
47、ame aUML name bObligation cMaximum occurrences dData type ename name M 1 CharacterStringscope scope M 1 CharacterStringterritory of use terOfUse M 1 CharacterStringgazetteer owner gazOwner M 1 CharacterStringcustodian cust M 1 CharacterStringcoordinate system coordSys M 1 CharacterStringcoordinate a
48、xis units coordAxisUnit O 1 CharacterStringmetadata date metaDat O 1 DateBLPU classification schemeBLPUClassScm O 1 CharacterStringstate coding scheme statCodScm O 1 CharacterStringcurrent date curDat M 1 Datelanguage language O N Language fcharacter set charSet O N CharacterStringexternal cross-ref
49、erencing schemeextXRefScm O N CharacterStringa The unique name of the attribute.bThe name of the attribute used in the UML model.cWhether the attribute is mandatory (M) or optional (O).dWhether the attribute is single-valued (1) or may have multiple values (N).eThe form of the attribute.fSee Annex C.6 BSI 2006BS 7666-2:20066 Basic land and property units6.1 Mandatory attributesA BLPU recorded in the gazetteer shall have the following mandatory (M) attributes:a) unique property reference number: a unique i
