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ARISTOTLE UNIVERSITY OF THESSALONIKI FACULTY OF ENGINEERING SCHOOL OF RURAL AND SURVEYING ENGINEERING DEPARTMENT OF CADASTRE, PHOTOGRAMMETRY AND CARTOGRAPHY Modelling the cadastral transactions of sale and subdivision in Greece Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema Aris Sismanidis COST G9 Modelling Real Property Transactions Working Group no 2, 2nd – 3rd September 2004 in Székesfehérvár, Hungary Modelling the cadastral transactions of sale and subdivision in Greece Benefits of modelling the cadastral transactions reinforcement of data exchange between land registration systems reduction of the transaction costs increase of the transparency of real.property markets Modelling the cadastral transactions of sale and subdivision in Greece The cases of sale and subdivision are being analysed taking into account: technical juridical administrative procedures from the time that a beneficiary motivates the transaction until its completion Modelling the cadastral transaction of sale Beginning of the sale Real Property Agency [Yes] Owner and buyer appeal Real Property finds a suitable parcelAgency Owner addresses Owner and buyer appeal Owner addresses Surveyor depicts in a to separate lawyers Surveyor depicts in a to a surveyor sketch the land parcel finds a suitable parcel to a surveyor to separate lawyers Agreement Agreement aboutabout sketch the land parcel Person the price of purchase Person Before addressing to ato anotary, Before addressing notary, the price of purchase motivates the purchasethe purchase [No] motivates owner and buyer collect the necessarycollect documents [No] owner and buyer BuyerBuyer addresses Buyer addresses addresses to a lawyerto a lawyer Buyer addresses the necessary documents directly to to the the owner owner directly [Yes] Is the price of the purchase over 12.000€? Does the person address to a Real Property Agency? Notary checks if there is any Change of Cadastral NotaryNotary checks Notary checks the Notary checks if there is any Notary checks the checks Change of Cadastral charge (servitude, mortgage) rest of the documents the title of the real property database records database records the title of the real property charge (servitude, mortgage) rest of the documents [Yes] [Yes] Cancellation of the property transfer [Yes] Existence of mortgage(-s) Are the necessary documents collected and valid? Elimination of mortgage(-s) Elimination of mortgage(-s) [No] [No] Deletion of the [No] Deletion of the temporal registration temporal registration Temporal registration Temporal registration the newnew title ofofthe title Is the pendency eliminated? Cadastral officer checks Cadastral officer checks for the legality of the deed for the legality of the deed and documents and documents The notary draws up The notary draws up deed thethedeed [Cadastral the Office] New beneficiary New beneficiary submitssubmits the deed to the Cadastral Office deed to the Cadastral Office What is Land Registration System? Completion of the property transfer Mortgage officer checks Registration Is check valid? New beneficiary submits the Mortgage officer for the legality ofchecks the deed [Yes] [Mortgage Office] Registration New beneficiary submits the for the legality of the deed of the new title of the new title deedto to the Mortgage Office deed the Mortgage Office and documents and documents Ownerand and buyerbuyer Owner sign the deed sign the deed [No] Modelling the cadastral transaction of subdivision Beginning of the subdivision [No] In case the initial land parcel is placed inside the urban area, the surveyor checks if the created land parcels are buildable according to the urban planning legislation Subdivision is cancelled In case the initial land parcel is placed inside the urban area, the surveyor checks if the created Beneficiary Beneficiary Surveyor checks theland parcels Beneficiary Beneficiary Surveyor checks the In caseare the initial land parcel is placed buildable according to Is the subdivision motivates addresses documents documents concerning motivates forbidden by the inside initial the zone, the surveyorparcel checks if the is placed In case the land concerning addresses [Yes] restrictions? the subdivision to a surveyor the real property area ofurban each created land parcel is usually over 2000m2 the planning legislation the subdivision to a surveyorthe real propertyinside the zone, the surveyor checks if the In case the land parcel is placed case the land parcel is(usually) placed over 2000m2 area of eachIncreated land parcel iszone, inside the residential control surveyor checks for the minimum area of the insidethethe residential control zone, receivesaa certification BeneficiaryBeneficiary receives certification subdivided land parcels, that the decrees define that the subdivision is permitted the surveyor checks for the minimum area of the The surveyor The checks if the land parcel originates that the subdivision is permitted surveyor checks if the land parcel originates subdivided land parcels, thethat decrees define from land consolidation ordistribution distribution the that the from land consolidation orthat Ministry of Agriculture had executed Ministry of Agriculture had executed Surveyor depicts the land Surveyor depicts ininaa sketch sketch theparcels land parcels and updates the sketch according to the mutation updates sketch according to the mutation that the took place. He names the new created in the cadastral map and gives a that tookpoints place. He names the new created table of coordinates of the new points in the in Hellenic Reference System Are the necessary Change of Cadastral points the Geodetic cadastral map and1987. gives a documents collected table of coordinates of the new points in and valid? Change of Cadastral database records and [No] database records and Hellenic Geodetic updating ofcadastral thethemaps cadastral maps Reference System 1987. updating of the Surveyor fills in a declaration form that Surveyor fills in a a declaration form that the created land are buildable. the created landparcels parcels are buildable. The declaration must be accompanied to The declaration must be accompanied to a plan depicting the land parcels. a plan depicting the land parcels. [Yes] and Beneficiary addresses to a notary Beneficiary addresses to a notary having all the necessary documents having all the necessary documents [Yes] NotaryNotary checkschecks ifNotary checks the Notary checks the there is any Is the pendency eliminated? Notary checks if there is any Cadastral officer checks for Notary checks rest of the documents officer checks for charge (servitude, mortgage) the legality of the documents Temporal registration the title of the real property Temporal registration Cadastral the title of the real property rest of the documents of spatial transaction the legality of the documents charge (servitude, mortgage) of the new title [Yes] Beneficiary submits Beneficiary submits the deed and the documents to the deed and the documents to the Cadastral Office the Cadastral Office [No] Subdivision is cancelled Deletion of the Deletion of the temporal registration temporal registration Existence of mortgage(-s) Elimination of mortgage(-s) Elimination of mortgage(-s) [No] Beneficiary applies to the Cadastral Beneficiary applies to the Cadastral [Cadastral Office] office for a cadastral diagram and office diagram and the numbers for of the a landcadastral parcels that change is the Land the numbers of the land parcelsWhatthat change Registration System? Mortgage officer Registration Registration of the new titles The notary draws up Beneficiary Mortgage Beneficiary Beneficiary The notary draws up checks forofficer the legalityBeneficiary [Mortgage Office] of the new title checks for the legality submits the deed and the documents sign the deed the the deed Completion of the submits the deed and Office the documents sign the deed the deed the documents to the Mortgage of ofthe documents subdivision [No] Is the check [Yes] valid? to the Mortgage Office Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema The Hellenic Cadastral Data UML Relational Database System XML - XMI Object Oriented Designing GeoDataBase Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema XML Introduction XML is... eXtensible Markup Language derived from SGML (Standard Generalized Markup Language - ISO 8879) an open standard which was approved in February 1998 from W3C, and includes ISO character sets a standard way of representing information in a text format (use tags to describe document structure and content) ideal for use in exchanging data in a standard, easy to interpret format similar to HTML system-independent supported from a wide range of software developers (IBM, Microsoft, Adobe, Oracle etc) defines, validates, and supports the sharing of formats in the web Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema XMI – An important initiative XMI is… XML Metadata Interchange an open standard like UML and XML inspired by Object Management Group’s (OMG) uses XML in order to achieve the textual representation of UML specifications enables the easy interchange of data between modeling tools based on UML or other tools Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema Generation of the geodatabase UML, XML, XMI are used in order to approach a model for the spatial data of the Hellenic Cadastre and achieve the generation of the geodatabase in a GIS software. The steps for creating the geodatabase were: Design the object model in static structure UML diagram in Ms Visio 2003, using a template published by ESRI (ArcInfo UML model) Export the model to XML Metadata Interchange (XMI), using the XMI Export facility Generate and create the geodatabase schema, in ArcGis 8.3 The generation tools translate the UML model into an empty geodatabase schema, that is, a set of feature classes, tables, relationship classes, and rules. Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema Conclusions- Benefits of use UML, XML & XMI UML can be used to capture systems analyses and create linguistic data models XML is a data interchange format characterized by its simplicity, flexibility and extensibility XMI is a tool for the transformation of object-oriented models into text format. XMI can be transformed into implementation specific products These technologies facilitate the exchange of information in an independent manner, allowing developers to build, store, and exchange models, regardless of using a programming language. In other words, they achieve the interoperability and the easy interchange of data between heterogeneous systems Modelling the spatial data of Hellenic Cadastre and generating the geodatabase schema Conclusions- Problems During the procedure of importing the data model in ArcInfo, the model had to be rebuilt in a more relational perspective so that the import of the model can be applicable, because ArcInfo operates in a more relational perspective either than in object oriented logic Software tools that export in XMI format use different versions of XMI, a problem which is strengthened by the various versions of UML