Which of the following is NOT a feature of Lightning Web Components?

Lightning Web Components (LWC) utilize modern web standards and offer numerous features, but direct database manipulation from the client side is not one of them.

In LWC, encapsulation is achieved through the use of Shadow DOM, which allows components to have separate styles and markup that do not interfere with other components. This feature helps maintain component integrity and promotes better code management.

Support for reactive properties is a key characteristic of LWC. This reactivity enables the UI to reflect changes in underlying data seamlessly, enhancing the user experience by ensuring that any updates are automatically rendered on the screen.

Integration with standard web APIs is another vital aspect of LWC, allowing developers to interact with web standards and external APIs effectively. This makes it easier to leverage existing web technologies while building applications on the Salesforce platform.

However, direct manipulation of the database from the client side would violate security practices and compromises data integrity. Instead, Salesforce encourages using Apex, the server-side programming language, to handle database transactions securely. This ensures that all data operations adhere to Salesforce’s security model and best practices.