How do you use data types and variables in Appian applications?

 

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The time it takes to learn Appian can vary depending on several factors, including your prior experience with low-code platforms, business process management (BPM), or programming, as well as the depth of knowledge you want to achieve. Here's a general breakdown of how long it might take to learn Appian at different levels.

The core functionality of Appian is to provide a low-code automation platform that enables organizations to rapidly build, deploy, and manage enterprise applications and workflows.

In Appian, Record Types serve as a central framework for organizing, accessing, and displaying business data from multiple sources in a consistent and user-friendly way.

In Appian applications, data types and variables are essential for handling and storing information within interfaces, processes, rules, and integrations.

🔹 Data Types in Appian:

Primitive Data Types

These are basic types used in most applications:

Text

Integer

Decimal

Boolean

Date / Date and Time

Time

Custom Data Types (CDTs)

Defined by developers using Data Type Designer or imported from external sources (e.g., XSD files or databases).

Represent structured objects, like Employee, Invoice, or Order, with multiple fields.

System Data Types

Built-in types provided by Appian, such as User, Group, Document, etc.

🔹 Using Variables in Appian:

Variables are used to store and manipulate data throughout an application. They can be created in several components:

Local Variables (local!)

Used in interfaces and expressions.

Temporary and exist only during the execution of the interface or expression.

Example:

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local!count: 10

Rule Inputs (ri!)

Inputs passed into interfaces, expressions, and process models.

Used to pass data between components.

Example:

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ri!employee.name

Process Variables (pv!)

Store values within a process model.

Used to pass and hold data between activities.

Can be exposed as inputs/outputs to subprocesses and smart services.

Constant (cons!)

Stores fixed values globally (e.g., configuration settings).

Useful for reusability across applications.

✅ How They Work Together:

Use data types to structure your information (e.g., a CDT for customer data).

Use variables to hold and move this data between UI forms, processes, rules, and integrations.

Define rule inputs to pass data into an interface.

Use local variables for temporary calculations or UI interactions.

Store and track progress in process variables during workflows.

By combining data types and variables effectively, you build dynamic, reusable, and scalable Appian applications.

Read more 

What is a record in Appian, and how is it different from a database table?

How to create a process model in Appian?

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