How do subtypes work?

How do subtypes work?

Subtypes are a subset of features in a feature class, or objects in a table, that share the same attributes. They are used as a method to categorize your data. For example, the streets in a city streets feature class could be categorized into three subtypes: local streets, collector streets, and arterial streets.

What is the role of a subtype in a geodatabase?

This article describes when and how you would use subtypes and domains to control the integrity of new data entered in your geodatabase. Defining subtypes on a geodatabase feature class or table allows the attribute values stored in one field to categorize the data and allows for automatic data entry.

What is a subtype in geodatabase?

A subtype defines aspects of a geodatabase schema that relates to data classification. In other words, instead of creating different feature classes for a set of features, a subtype functions as a way to define a subset of features within an individual geodatabase feature class.

How do you add subtypes in Arcmap?

Creating subtypes

1. In the Catalog tree, right-click the feature class or table to which you want to add subtypes.
2. Click Properties.
3. Click the Subtypes tab.
4. Click the drop-down arrow and click the subtype field from the list of available long-integer fields.

What is another word for subtype?

In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for subtype, like: , haplotypes, allele, , isotypes, genotype, , subpopulation, isoforms, epitopes and serologically.

What are geodatabase domains?

A domain is a declaration of acceptable attribute values. Attribute domains can be shared across feature classes, tables, and subtypes in a geodatabase. For example, a feature class for water mains and a feature class that stores water laterals can use the same domain for the ground surface type field.

How to associate a domain with a subtype?

To associate an attribute domain with a field for the new subtype, click the Domain field, click the drop-down arrow, then click the domain from the list of domains. Only those domains that apply to this field type are displayed in the list.

How to create subtypes and attribute domains in Excel?

Under Domain Properties, click the drop-down arrow for the Field Type and click Float . This defines the data type of the column to which the domain can be applied. Click the drop-down arrow for the Domain Type and click Coded Values.

How is the main subtype connected to the range domain?

The Main subtype is connected to a coded value domain in the Materials field and a range domain in the Diameter (in.) field. The new water main is made of steel with a diameter of 50 inches, so the analyst updates the Materials field to Steel and changes the Diameter (in.) field to 50 from the default value of 29.5.

Where do I find the default value for a subtype?

When you add a new subtype, you assign default values and domains to some of its fields. Click the Description field next to subtype code 0 under Subtypes and type Unknown for its description. Under Default Values and Domains, click the Default Value field next to the H_CONFID field and type 0 for its default value.