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©2009 Ness Technologies – Proprietary and Confidential
Public Access to Cadastral and Land Registry Data in Slovakia
Public Access to Cadastral and Land Registry Data in Slovakia
Rastislav Wartiak
Project Manager, Ness Czech
WPLA Workshop, March 5, 2010, Baku
www.ness.com2
Ness Technologies around the worldNess Technologies around the world
Increasing global market share
CanadaNetherlands
Czech RepublicSlovakia
Switzerland
RomaniaUnited States
Germany
PortugalHungary
United Kingdom
IsraelSpain
Italy
India
Singapore
Malaysia
Thailand
18 countries in 4 geographic regionsAbout 7,800 employeesStrong presence in Europe
www.ness.com
Ness and Cadastre/Land RegistryNess and Cadastre/Land Registry
Czech Republic
► doing business since 1997 – Czech Office for Surveying, Mapping and Cadastre
► development of Information System of Cadastre of Real Estates
• covers all processes related to cadastre and land registry within the organization
► includes Internet access to data
• interactive web pages and web services (XML)
• generates documents with electronic signature
• supports e-conveyancing, in some cases even prepares the change automatically
Slovakia
► first project started in 2003 - Geodetic and Cartographic Institute
► publishing cadastral/land registry data from legacy systems – Cadastral Portal
• access to all public data is now for free
► development of new “core” system started in 2009
• it will replace all current systems and integrate all tasks and data into one
3
www.ness.com
Cadastre and Land Registry in SlovakiaCadastre and Land Registry in Slovakia
Joint cadastre and land registry
8 regional offices
72 local offices
► responsible for local data
10 individual systems maintaining the data
► only partially interconnected
central database maintained as off-line copy
► updated every weekend
4
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Presenting data on the web – original systemPresenting data on the web – original system
100 concurrent users
3.000 outputs per day
Only registered users
Pre-paid or post-paid billing
Updated once a week
► during weekend
Outputs were not legal documents
All users had to pay for data in the beginning
► very low usage
Later, some government agencies were granted free access
► increase in system workload
5
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Upgrade – free access to the dataUpgrade – free access to the data
Slovak government decided to offer the data for free
To improve public services and transparency
5.000 concurrent users
120.000 outputs per day
Most of the users will be inexperiencedwith the terminology
Result:
► HW upgrade
► SW redesign
7
www.ness.com
Problems encountered – PerformanceProblems encountered – Performance
Very high demand during first few days
► lowered to “regular” workload in three months
Scaling infrastructure for this period is expensive
► only part of the HW is used after start-up period
Using fewer resources results in system inaccessibility
► this occurs during media coverage – new service is promoted
13
Plan your new services in waves
► once one service becomes common add a new one
Run other systems on part of the infrastructure
► combine new system implementation with HW upgrade for another one
www.ness.com
Problems encountered – Incorrect dataProblems encountered – Incorrect data
Data in the system does not always contain current and valid data
► paper archive is still the master
Data fields contain mixed values
► e.g. “Last name” field contains first name, last name and social security number
► legacy systems did not contain structured data, not all was migrated correctly
► private data is displayed even though system does not reveal these fields
14
Invite users to help to make the data better
► implement simple “Report data problem” links and forms
Define patterns of “public” or “sensitive” data and run checks
► e.g. numbers are not common in name
www.ness.com
Problems encountered – Data misuseProblems encountered – Data misuse
Data is public for querying but not for making copies
► only some types of queries are allowed, copy allows data mining
Copying affects performance
► it can increase workload significantly
15
Introduce “copy text from this screwed picture” test
► humans can (usually) solve it, computers (usually) can not
Limit number of queries during time period from one IP address
► human can not generate more than a few queries in a minute
Thank you
Rastislav WartiakProject Manager, Ness Czech
Thank you
Rastislav WartiakProject Manager, Ness Czech
