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Apex Trigger to Prevent Deletion - Salesforce-scripting Typing CST Test
Apex Trigger to Prevent Deletion — Salesforce-scripting Code
Prevent deletion of Account records with more than 100 related Contacts.
trigger PreventAccountDelete on Account (before delete) {
for(Account acc : Trigger.old) {
Integer contactCount = [SELECT COUNT() FROM Contact WHERE AccountId = :acc.Id];
if(contactCount > 100) {
acc.addError('Cannot delete account with more than 100 contacts');
}
}
}Salesforce-scripting Language Guide
Salesforce Scripting refers to the use of programming and declarative scripting tools within Salesforce to automate processes, customize behavior, and extend the platform using Apex, Visualforce, Lightning Web Components, and Flow.
Primary Use Cases
- ▸Custom triggers and business logic via Apex
- ▸Automating repetitive tasks using Flows and Process Builder
- ▸Extending Salesforce UI using LWC or Visualforce
- ▸Data validation and integration with external systems
- ▸Building custom objects, workflows, and reports
Notable Features
- ▸Cloud-native scripting on Salesforce platform
- ▸Strong integration with standard objects and APIs
- ▸Event-driven triggers for data changes
- ▸Low-code automation via Flows and Process Builder
- ▸Secure, multi-tenant execution with governor limits
Origin & Creator
Developed by Salesforce.com, introduced in the mid-2000s to enable custom business logic on the cloud-based CRM platform.
Industrial Note
Extensively used in CRM automation, enterprise SaaS customization, and custom application development on Salesforce clouds.
Quick Explain
- ▸Salesforce scripting allows developers and admins to implement business logic beyond standard declarative configurations.
- ▸Apex is a strongly-typed, object-oriented programming language similar to Java, used for server-side logic.
- ▸Visualforce and Lightning Web Components (LWC) enable dynamic UI customization.
- ▸Flows, Process Builder, and Workflow Rules provide low-code automation using declarative scripting.
- ▸Widely used in sales, service, marketing automation, and platform extensions.
Core Features
- ▸Apex triggers and classes
- ▸Visualforce pages for custom UI
- ▸Lightning Web Components for modern frontends
- ▸Declarative automation via Flows
- ▸API integration via REST/SOAP calls
Learning Path
- ▸Understand Salesforce objects, fields, and relationships
- ▸Learn basic declarative automation (Flows, Process Builder)
- ▸Study Apex syntax, triggers, and classes
- ▸Learn Lightning Web Components for UI
- ▸Practice integrations, testing, and deployment workflows
Practical Examples
- ▸Send automated email notifications on opportunity stage changes
- ▸Create account-based workflows with Flow
- ▸Write Apex trigger to update related records automatically
- ▸Build custom Lightning component to display aggregated data
- ▸Integrate Salesforce with external ERP via REST API
Comparisons
- ▸Salesforce scripting vs Excel macros: Salesforce supports cloud automation, macros are desktop-only
- ▸Salesforce Apex vs Java: Apex is platform-bound, Java is general-purpose
- ▸Flows vs Apex triggers: Flows are low-code; Apex is code-heavy
- ▸LWC vs Visualforce: LWC modern, reactive UI; Visualforce legacy pages
- ▸Salesforce scripting vs Python scripts: Python is general-purpose; Salesforce is CRM-specific
Strengths
- ▸Deep Salesforce ecosystem integration
- ▸Supports both declarative and programmatic approaches
- ▸Robust security and sharing model enforcement
- ▸Real-time automation with triggers and workflows
- ▸Strong community and extensive documentation
Limitations
- ▸Governor limits constrain resource usage
- ▸Steep learning curve for Apex and advanced LWC
- ▸Testing and deployment require sandbox or scratch orgs
- ▸Dependent on Salesforce platform releases
- ▸Heavy customization can impact maintainability
When NOT to Use
- ▸For non-Salesforce applications
- ▸For heavy computational tasks outside Salesforce limits
- ▸For tasks better handled in external systems
- ▸When declarative automation suffices
- ▸For standalone websites unrelated to Salesforce data
Cheat Sheet
- ▸trigger NameTrigger on Account (before insert) { ... }
- ▸public class MyClass { public static void method() {} }
- ▸LWC template: <template> ... </template>
- ▸Flow: Record-Triggered Flow updates related records
- ▸System.debug('message') -> Debug logging in Apex
FAQ
- ▸Can Apex run outside Salesforce? -> No, it's cloud-bound.
- ▸Is Salesforce scripting object-oriented? -> Yes, Apex supports classes and interfaces.
- ▸Do I need admin rights to script? -> Usually yes, for sandbox access.
- ▸Can Flows replace Apex? -> Depends on complexity; Flows are low-code.
- ▸How to debug Salesforce scripts? -> Use Developer Console logs and debug statements.
30-Day Skill Plan
- ▸Week 1: Salesforce objects, fields, and Flow basics
- ▸Week 2: Apex triggers and classes
- ▸Week 3: LWC basics and custom UI development
- ▸Week 4: API integration and asynchronous Apex
- ▸Week 5: Testing, deployment, and performance optimization
Final Summary
- ▸Salesforce Scripting enables automation and customization of Salesforce CRM and platform applications.
- ▸Supports Apex, LWCs, Visualforce, and declarative tools like Flow.
- ▸Ideal for admins, developers, and architects building enterprise CRM solutions.
- ▸Deeply integrated with Salesforce ecosystem, cloud-native, and secure.
- ▸Supports automation, integration, UI customization, and complex business logic.
Project Structure
- ▸Apex classes and triggers
- ▸Visualforce pages or Lightning Web Components
- ▸Flow definitions and process builder automations
- ▸Custom objects and fields
- ▸Reports, dashboards, and metadata configuration
Monetization
- ▸Custom Salesforce development consulting
- ▸CRM automation services for enterprises
- ▸AppExchange app development and sales
- ▸Integration and workflow optimization services
- ▸Analytics and reporting solutions
Productivity Tips
- ▸Use declarative tools before coding Apex
- ▸Leverage LWC for modern UI and reusability
- ▸Bulkify operations to avoid governor limits
- ▸Test in sandbox or scratch orgs before deployment
- ▸Document flows and triggers for maintainability
Basic Concepts
- ▸Objects - Standard and Custom Salesforce objects
- ▸Fields - Data elements in objects
- ▸Records - Individual entries in objects
- ▸Triggers - Automated Apex scripts on data changes
- ▸Flows - Declarative automation for processes