1. Standard Objects: Predefined CRM objects

• Extension: No specific extension, these are predefined by Salesforce.
• Definition: Standard objects are provided by Salesforce to cover the core CRM (Customer Relationship Management) functions. These include objects for managing sales, support, and other CRM processes.
• Examples:
  • Account: Stores information about companies or organizations.
  • Contact: Stores details about people linked to an Account.
  • Opportunity: Tracks potential sales or deals.
  • Lead: Represents a prospect or potential customer.
  • Case: Tracks customer service requests or issues.

Use Cases:

• Account: A company using Salesforce might store all their customer and partner companies in the Account object.
• Opportunity: Sales teams can manage their sales pipeline by tracking deals in the Opportunity object.
• Case: Customer support agents use the Case object to manage and resolve support issues.

2. Custom Objects: User-defined objects

• Extension: __c
• Definition: Custom objects are objects that users create to store data specific to their organization’s requirements. These objects can be linked to standard objects or other custom objects.
• Examples:
  • Invoice__c: Stores invoice data for sales transactions.
  • Purchase_Order__c: Manages purchase orders linked to customers or vendors.

Use Cases:

• Custom Business Logic: A company might create a custom object, Project__c, to track the details of ongoing projects, such as timelines, resources, and deliverables.
• Custom Financial Data: Organizations may use a Purchase_Order__c object to track all orders related to purchasing, allowing deeper customization beyond standard objects like Opportunity.

3. Big Objects: High-volume data storage objects

• Extension: __b
• Definition: Big objects are designed to store large volumes of data (billions of records) at low cost, optimized for high-volume use cases where performance matters for querying and data storage.