[chanchal kumar]

hi madhulika,

YAML (Ain't Markup Language) is a human-readable data serialization language. It is commonly used for configuration files, but could be used in many applications where data is being stored or transmitted.

[chanchal kumar]

hii aanurag,

Rollup summary will work only in MASTER DETAIL relationship whereas Formula field will work in cross objects and individual objects

[chanchal kumar]

hello shradha,

setcallback() method is used to call the method in server-side controller.

[chanchal kumar]

hello anurag,

you can't change domain name after setup, you can raise a case to salesforce, but it required a lot of time to process.

[chanchal kumar]

hello madhulika,

those methods which are used frequently in code, we make a utility class of them and we can reuse this method whenever we required it.

[chanchal kumar]

hello Anurag,

"param" is used to pass values from visualforce page to APEX cotroller.

REST APIs have four types of parameters:

• Header parameters: Parameters included in the request header, usually related to authorization.
• Path parameters: Parameters within the path of the endpoint, before the query string (?). These are usually set off within curly braces.
• Query string parameters: Parameters in the query string of the endpoint, after the ?.
• Request body parameters: Parameters included in the request body. Usually submitted as JSON.

[chanchal kumar]

hello madhulika,

Creating a custom domain helps you better manage login and authentication for your org in several key ways. You can:

• Highlight your business identity with your unique domain URL
• Brand your login screen and customize right-frame content
• Block or redirect page requests that don’t use the new domain name
• Set custom login policy to determine how users are authenticated
• Let users log in using a social account, like Google and Facebook, from the login page

[chanchal kumar]

hello shradha,

Salesforce provides different ways to run your code asynchronously like Batch apex, @future method.

there are some limitation of future method,

• You cant call a future method from another future method.
• You can call up to 50 @future methods per transaction.
• You can call up to 250000 future methods per 24 hours. This is in conjunction with all types of asynchronous methods like batch apex.
• @future methods are not executed during salesforce downtime and any already running jobs during the start of downtime are halted and restarted after the downtime.