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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