Documentation:Column: Difference between revisions

Column

Revision as of 05:39, 17 May 2024

Definition

A column is a specific piece of information associated with a data entity (real-world objects, concepts, or entities within a system). It represents a single data point or property.

For example:

In a customer data entity, columns might include CustomerID, Name, Email, and Phone.
In a product data entity, columns might include ProductID, Name, Price, and Category.

Role of Columns

Columns define the structure of data entities.
They determine what information can be stored and retrieved.
Columns are essential for querying, sorting, and filtering data.

Customization

In model-driven apps, you can customize columns by defining their data type, validation rules, and display format.

Columns can be added, modified, or removed based on the specific requirements of your application.

Columns (fields or attributes) play a vital role in defining the structure and properties of data entities within a model-driven development environment.

This page was edited 95 days ago on 06/17/2024. What links here

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-A '''column''' typically refers to a '''field''' or '''attribute''' associated with a '''data entity'''.
+==== Definition ====
+A '''column''' is a specific piece of information associated with a data entity (real-world objects, concepts, or entities within a system). It represents a single data point or property.
-'''Data Entities'''
-In model-driven development, data entities represent real-world objects, concepts, or entities within a system.
-Examples of data entities include '''tables''', '''classes''', or '''database records'''.
-'''Columns (Fields/Attributes)'''
-A '''column''' is a specific piece of information associated with a data entity.
-It represents a single data point or property.
 For example:
-In a '''customer''' data entity, columns might include '''CustomerID''', '''Name''', '''Email''', and '''Phone'''.
+* In a '''customer''' data entity, columns might include CustomerID, Name, Email, and Phone.
+* In a '''product''' data entity, columns might include ProductID, Name, Price, and Category.
-In a '''product''' data entity, columns might include '''ProductID''', '''Name''', '''Price''', and '''Category'''.
-'''Role of Columns'''
-Columns define the structure of data entities.
-They determine what information can be stored and retrieved.
-Columns are essential for querying, sorting, and filtering data.
+==== Role of Columns ====
-'''Customization'''
+# Columns define the structure of data entities.
+# They determine what information can be stored and retrieved.
+# Columns are essential for querying, sorting, and filtering data.
+==== Customization ====
 In model-driven apps, you can customize columns by defining their data type, validation rules, and display format.