Principal phases of developing a GIS data model
Using formal models that specify how objects are positioned in space, all GIS systems are constructed. The terminology for describing and thinking about items that are located on the planet is defined by a geographic data model.
Building a data structure, such as tables, relationships, requirements, metadata, identification, feature definition, topology rules, etc., is known as data modeling.
Gathering information and analyzing needs for the necessary maps and visualization goods, as well as the analysis and decision support products, are crucial duties in these operations.
Using ArcGIS, a unique file folder on disk must be created in order to create a file geodatabase.
One of the following approaches can be used to create a file geodatabase:
Use the ArcGIS Pro Catalog pane’s New File Geodatabase option.
Use the geoprocessing tool Create File Geodatabase.
Run the CreateFileGDB management function in a Python script.
Open the Catalog window in ArcCatalog or ArcMap.
The Catalog tree’s file connections should be expanded.
To build a file geodatabase, right-click the folder you wish to use, select New, and then select File Geodatabase.
In the area you chose, a file geodatabase is produced.
By selecting Rename from the context menu when you right-click the file geodatabase, you may rename it.
- Start the Create File GDB program.
You may generate a file geodatabase that matches to an earlier version of ArcGIS by using the Create File GDB geoprocessing tool. This enables you to share data with users of earlier versions of ArcGIS who might not be able to access more recent geodatabase releases.
Note that since ArcGIS 10, file geodatabase schemas have not changed.
- Open ArcGIS Desktop and select the Create File GDB tool.
- To locate the tool, utilize the search function or access it directly from the Data Management toolbox’s Workspace toolset.
- Indicate the path of the folder where the file geodatabase should be generated.
- Fill in the geodatabase’s name here.
- Select the ArcGIS version that the file geodatabase will be in.
Create a new File Geo-database
- Start the Create File GDB program: You may generate a file geodatabase that matches to an earlier version of ArcGIS by using the Create File GDB geoprocessing tool. This enables you to share data with users of earlier versions of ArcGIS who might not be able to access more recent geodatabase releases.
Within a File Geodatabase, create a Feature Dataset.
A set of linked feature classes with a shared coordinate system is known as a feature dataset.
To spatially integrate relevant feature classes, feature datasets are employed. Their main objective is to group relevant feature classes into a single dataset for easier administration. The actions to make a feature dataset are as follows:
- Select Feature Dataset from the context menu of the already created File Geodatabase (.gdb).
Type Name (m project) and choose Next. Select your corrected map by selecting Add Coordinate System Tool > Import from the menu.
3. Click Next button all are Default option is OK just Skip it and Click Finish button to close the wizard.
Within a feature dataset, create feature classes.
A grouping of geographical features with the same geometric type is known as a feature class (such as point. line, or polygon). Additionally, a shared region uses the same attribute fields.
Click the right mouse button, select New > Feature Class, and then choose the Map Feature dataset (m project).
Select feature Type, then enter Name and Alias. Simply click the Next button on the database storage configuration screen without making any changes.
Add a new field and choose a type in the field’s blank row in the fields creation wizard. By selecting the Import option, you may also import data. Select Finish from the menu.
Make a Table in a Geodatabase File.
Tables are used to record and manage the characteristics and features of geographic objects. Geographic features are built on tabular data, which enables you to query, view, and analyze your data. Here, you establish a particular kind of table for holding both spatial and attribute data.
- Right-click the Geodatabase(.gdb) and choose “New” in the Catalog box. Table
2. Type the table’s name and alias (sikkimNationalpark) and press the Next button. Simply click the Next button in the database storage configuration wizard without making any ch
Click the blank row in the Field Name section of the fields creation wizard, give the field a name, and then choose the data type. Click the Finish button to finish.
- Select Start Editing by clicking the Editor Toolbar’s Editor Button. From the TOC Window, choose the table (Shikkim National Park). The records in this table can be added by selecting Open with the right click.
- stop editing session and save changes.
5. In Display, XY Data window, X and Y field automatically default selected, X field is Longitude, and Y field is Latitude. The coordinates system is automatically selected. Finally, click the Ok button to close the Add XY Data window.
Now Display your Data in the Map Frame.
