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GIS Applications development for GHMC..
  The Main tasks involved in the customization of this application are

  1. User Needs assessment and requirements specification.
  2. Project Planning
  3. Database design
  4. Verification /Editing of data
  5. Database Development
  6. Application Coding
  7. Quality assurance
  8. Documentation
The customization of application has been taken up in a phased manner  data base is created suitable Graphic and Non-graphic data formats designed for application development the modules have been carried taking into accounts the requirements of various departments in the municipality are as follows:
 
  The application analysis tools as part of GIS interface consists of :

1. TOWN PLANNING MODULE:

  • Property Search: Property can be researched by using various multiple map layers including parcels and by using the pan and zooming tools. A property can also be identified on a Map layer by moving the pointer. Which shows the property photographs. The application allows the features to be labeled with text from the field values. For every parcel, the information sheet contains the building ID, ward No. Block No., Door No., locality, Structure Type, Floors, Basement Plot area, Plinth area, Classification, Assessment year and utility information such as the water connection, Drainages and the Septic Tank information.

  • Query Builds for Parcel Information: This tool provides a dialog box at the bottom of the map, which can be used to type in a query of use the query builder interface. The Query Building Queries features based on this allotment values. “ Find Parcels where Total Tax Greater then 10,000 and Total Paid Tax less then 10,000”. On submitly the Query report is generated to show all parcels which satisfy the criteria and highlight the same on the map as well.
  • Building Permission Application: For each Selected parcel a “Download Form” button is displayed to download the Building Application form which can be printed. This form should automatically populate the above mentioned.
     
  • Identify tool-Property identification tool, it is useful for town Planning department.

  • Query builder-It is used to query and analyze the mapped data in a combination of scenarios.
  • Measure tool-It is use to measure any segment length on the map, the total length is displayed on the screen in feets/units.

  • Buffer analysis tool-It is helpful for road winding projects wherein the assistant of road winding can be estimated and the properties effected can be viewed.

  • Specialized area selection tool-It is use to create areas of polygons of any section of the map and query all the properties following within the area.
 
  2.  Revenue Module :

The Revenue Module provides a GIS interface wherein properties can be queried using an Assessment ID/D. No. /Owner’s Name.
a.  Building application fee calculator:
 
A building application fee calculator is provided with their application, where in all details required to calculate the total fee to be paid by the applicant are entered to obtain a final fee amount.

b. Reporting tools:

Reporting tools are provided for the Town Planning Module.Reports can be generated in the form of bar graphs and pie charts for ward wise property count, ward wise property type and ward wise structure type.

 
   3. Engineering and Sanitation Application:

In Utility they are 6 themes viz.,
  1. Roads: Type of Roads, Carriage width, Age, Condition of pavement, Lease Lands, Municipal Vacant Lands, Parks and Playground, Buildings, Community Hall, Function Hall, Auditorium.
  1. Water supply: Type of pipe, Age, Dia of Valum, Condition, Pumping station and Pump set, Contours.
  1. Open Drains:  Type of Drain, Age, Condition , Present Value, Etc.,
  1. Under Ground Drainage: Mains, Sub-mains, Laterals, Condition,  Main holes.
  1. Street Lights: Type of lights, Age, Condition, Service No. Power Bores, Depth of Bore well.
  1. Solid Waste Management: Dustbin, Garbage, Mode of Transportation, Type of wastage, sanitary vehicles & Tricycles.
 
   With this application the user can
  1. Display and query road network data based on the type of the roads
  2. Display and query water supply network with main categories.
  3. Display Sewerage network including manholes.
  4. Display surface water features such as rivers, nalas, canals etc.
  5. Display and query properties which have municipal water supply connection. And or drainage connection.
 
   II. Project Planning:    Project is divided into 3 phrases

1. Base Map Preparation
2. Property & Utility Mapping
3. GIS Application Development.

Phrases 1 & 2 of this project here under taken by consultants. The data for the two modules was acquired and stand lone applications using Arc view 3.2 were developed for the same.

Phrase 3 is related to property tax, town planning and infrastructure management is linked and integrated to the detailed survey data.

The customized GIS application includes:

  1. Revenue Module
  2. Town Planning Module
  3. Engineering Module
  4. Public Grievance Module
  5. Linkage of GIS with MI

I. Benefits of Web GIS:

  1. Single centralized dataset
  2. No need of proprietary GIS software at the client end
  3. Easy of use
    • Web browser based, minimal training required
      1. Wide access to GIS data & functionality.
        • Linkages with other departments & organizations.
        • Potential for release of portions to public.

Functional benefits:

  1. Improve management of resources.
  2. Interdepartmental information sharing and communication.
  3. Better planning of public utilities services and Town Planning.
  4. View & presentation of information (visualization of municipal assets geographically)
  5. Tools to query, analyze and map data in support of the decision making process.
  6. Planning & management of Utility and Town Planning Database.
  7. Ease in maintenance and better monitoring of municipal resources.
  8. Online Decision-Makin

a.  Data compatibility:

In this application the present state has been built using Arc-view all spatial data can be imported into Oracle DBMS using Arc-SDE. Attribute data is in access and can be ported to any Data Base Management Systems.

b.  Data Exchange and Data Security:

Web GIS Connects directly to the GIS data in its native format whether its in AUTOCAD Format or Arc-info, Arc-view etc when the main GIS data at the  HQ (central server) is Published on the web users at the taluku level (clients) or other places will be able access this data through internet/intranet.

c. User friendliness and Easy viewing and querying:

While publishing the data considering the awareness in browser usage the interface (web pages) will be designed in such a way that it appears familiar to the user. Thus the user-friendliness will be ensured while viewing the GIS data.

d. Data updation:

Given the authority by the DATA administrator at the central server, a user can modify the database (inputting a new record or modifying an incorrect information etc) wherever required through the web.

e. Transparency:

With web-GIS system in place authorize person can monitor work and inspect the authenticity of data entered/updated from anywhere. Public access to data through internet allows people to view their property details Any false claim can be resolved with the help of web-GIS system.

f. Data sharing:

Once municipal GIS database is created it will be of immense use to other  departments it can be a source of revenue. The quality of data can be viewed onlineAnd interested department can put a request for a particular dataset.

g. Low Cost:

While accessing the GIS data from the central server through internet (the client needs only a web browser (internet explorer or Netscape Navigator) There is no need of installing sophisticated GIS which has been used to create the GIS project at the User site, So once Web-GIS connect the GIS data directly for its native format. The data will be published and finally the users (clients) will be able to view and query this data through a browser only.

III. DATA BASE DESIGN :

The primary purpose of this phase of the GIS development process is to specify. How the GIS will perform the required applications.  Database planning and design involves defining how graphics files will be symbolized (i.e., color weight size, symbols Etc) how a graphics files will be structured how non graphic attribute files will be structured how file directories will be organized basing on the naming conventions of files the project area will be sub divided into geographical areas.

The products will be presented in the form of map sheet layouts report formats etc. and what management and security restrictions will be imposed on file access will Be completed by the following activities.

  1. Select a source (document, map digital file etc) for each entity and attribute included in the E-R diagram.
  2. Set up the actual database design (logical /Physical design)
  3. Define the procedures for converting data from source media to the database
  4. Define procedures for managing and maintaining the database
 
  IV. VERIFICATION AND EDITING OF DATA & DATABASE DEVELOPMENT

Development of web-enabled GIS applications consists of 4 modules:

  1. Town planning modules.
  2. Revenue modules.
  3. Utility modules.
  4. Public grievances modules.

The Project is divided into 3 phrases:

1. Base Map Preparation
2. Property & Utility Mapping
3. GIS Application Development.

Phrase 1 & 2 is under taken by consultants. The data for the 2 modules was acquired and stand lone applications using arc view 3.2 a development for the same.

The entire database creation was undertaken by the consultants. The main scope of the study involve developing a web-based GIS system for the two modules using latest technologies and best practices. Both the modules by supposed to be redeveloped using existing business logic and architecture tested and implemented in the stand lone version of the software. The existing database was restructured without any loss for information to make it compatible for web-GIS.

V.    The database development:

  1. Data exchange and data security
  2. User friendliness and easy viewing & query.
  3. Data updation
  4. Transparency
  5. Data sharing
  6. Cost efficiency

VI.    APPLICATION CODING:

The web-enabled GIS system was developed using the following.

Technical details:

     Database used: SQL Server 2000, Arc SDE 9.1

  1. Platform: NET
  2. Front-end: ASP. Net, C#
  3. Back-end: SQL Server 2000, Arc SDE 9.1
  4. Web-server:IIS6.0
  5. Application server spatial server: ArcIMS9.1

a. Data: the backend data utilized by a system can be as simple as a few tables or as complex hundreds of tables as well as stored procedures, views, and so forth.

b. Business rules: Current approaches to system design place business rules in their own objects which are separate from the data and the user interface. A simple document outlining a system’s business rules can greatly enhance the understanding of what an application actually does.

c. User interface: The user interface is one of the easier application features to understand, primarily because a good feel for it by simply loading and using the application. Custom controls or third-party tools are often used, so the learning curve is often steeper. A good approach to documenting the user interface is to provide a list of the forms and other elements utilized in the system, along with a detailed description of each.

d.  Security: As we browse through existing code, you’ll undoubtedly notice security checks applied in various areas, but it is hard to grasp an overall understanding of an application’s security model.

The application coding documentation is much more important the coding the application developed as per the user needs assessment and project planning documentation basing on the database design.

 
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