Why do we need Visualforce pages in Salesforce?

Visualforce pages are webpages that belong to Salesforce. These webpages are created using a unique tag-based Mark-up language. It is similar to HTML but it’s primary use is to access, display and update the organization’s data. The page is accessed by using a URL similar to that of a traditional webserver page.

What is a Visualforce page?

A Visualforce page is similar to a standard Web page, but includes powerful features to access, display, and update your organization’s data. Pages can be referenced and invoked via a unique URL, just as they would be on a traditional web server. Visualforce uses a tag-based markup language that’s similar to HTML.

What is app centric in Salesforce?

Lightning was designed to follow an App-Centric model. This essentially means that it has been designed to create self-contained components that build on top of each other. To put this in perspective, with Visualforce you would send an interaction to the Salesforce server and then update the entire page.

What is data table in Salesforce?

An HTML table that’s defined by iterating over a set of data, displaying information about one item of data per row. The body of the contains one or more column components that specify what information should be displayed for each item of data.

When should I use Visualforce?

Developers can use Visualforce pages to:

1. Override standard buttons, such as the New button for accounts, or the Edit button for contacts.
2. Override tab overview pages, such as the Accounts tab home page.
3. Define custom tabs.
4. Embed components in detail page layouts.
5. Create dashboard components or custom help pages.

What is trigger in Salesforce?

What is Triggers in Salesforce? A trigger is an Apex script that executes before or after data manipulation language (DML) events occur. Apex triggers enable you to perform custom actions before or after events to record in Salesforce, such as insertions, updates, or deletions.