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Validation Rule vs Apex Triggers

Declarative data quality vs programmatic logic

All comparisons

Validation Rule

VS

Apex Triggers

Validation Rule

A Validation Rule in Salesforce is a formula-based rule that prevents users from saving a record if certain conditions are not met. Validation Rules enforce data quality by checking field values against specified criteria and displaying an error message when the data does not comply.

Apex Triggers

Apex Triggers is a Setup page that lists all Apex triggers in the org along with their associated objects, API version, and status (Active or Inactive). Triggers are pieces of Apex code that execute before or after data manipulation events like insert, update, delete, and undelete on Salesforce records.

Key Differences

DimensionValidation RuleApex Triggers
ApproachDeclarative — formula-basedProgrammatic — Apex code
PurposeEnforce data quality before saveComplex business logic on record events
TimingBefore save onlyBefore and after insert, update, delete, undelete
ComplexitySingle formula expressionFull programming language capabilities
Error HandlingDisplays error on field or page topCan throw custom exceptions and log errors

When to use Validation Rule

Simple data quality checks like required fields, format validation, or cross-field rules.

When to use Apex Triggers

Complex business logic, cross-object updates, or integrations triggered by record events.

Related Comparisons

Other side-by-side breakdowns you might find useful

Apex ClassesVSApex Triggers
Reusable business logic vs event-driven record handler
DevelopmentDevelopment