External Objects
External Objects refer to data structures or entities that exist outside the main application's memory or runtime environment, often accessed through APIs, file systems, or external services. They enable applications to interact with external data sources, such as databases, cloud storage, or third-party systems, without loading all data into memory. This concept is crucial for building scalable, distributed systems that handle large datasets or integrate with other platforms.
Developers should learn about External Objects when building applications that require data persistence, integration with external services, or handling of large-scale data beyond local memory limits. Specific use cases include connecting to databases (e.g., SQL or NoSQL), accessing cloud storage (e.g., AWS S3), or interfacing with APIs from social media platforms or payment gateways. Understanding this concept helps in designing efficient data access patterns and ensuring system interoperability.