[Deepak]

Use FORMAT with the SELECT clause to apply localized formatting to standard and custom number, date, time, and currency fields. When the FORMAT function is applied these fields reflect the appropriate format for the given user locale.

[Deepak]

Compact Layouts :
In the full Salesforce site, a compact layout determines which fields appear in the Chatter feed item that appears after a user creates a record with a quick action.
In Salesforce1, the first four fields that you assign to a compact layout appear in:
An object’s record highlights area
Expanded lookup cards on a record’s related information page
In Lightning Experience, the first five fields that you add to a compact layout display in an object’s record highlights panel and in the expanded lookup card you see when you hover over a link in record details.
Page Layouts :
Page layouts control the layout and organization of buttons, fields, s-controls, Visualforce, custom links, and related lists on object record pages. They also help determine which fields are visible, read only, and required. Use page layouts to customize the content of record pages for your users.
Page layouts can include s-controls and Visualforce pages that are rendered within a field section when the page displays. You can control the size of the s-controls and Visualforce pages, and determine whether or not a label and scroll bars display.
Salesforce has two drag-and-drop tools for editing page layouts: the original page layout editor and an enhanced page layout editor. The enhanced page layout editor is enabled by default, and provides all the functionality of the original editor, as well as additional functionality and an easier-to-use WYSIWYG interface.
From within a page layout, you can access a mini page layout. The mini page layout defines the hover details that display when you mouse over a field on an object’s detail page in the Agent console or in the Recent Items section of the sidebar in Salesforce Classic.

[Deepak]

A Salesforce deployment is a single, specific activity that takes place at the tail end of a project — typically, the act of moving changes from a sandbox environment over to your production environment and pushing them live to end users and customers alike.

[Deepak]

Quick deploy is a feature that can deploy components to production environment. Quick deploy is released as a pilot program for salesforce production environment.

[Deepak]

Use change sets to send customizations from one Salesforce org to another. For example, you can create and test a new object in a sandbox org, then send it to your production org using a change set. Change sets can contain only modifications you can make through the Setup menu.

[Deepak]

apex:iframe. A component that creates an inline frame within a Visualforce page. A frame allows you to keep some information visible while other information is scrolled or replaced. This component supports HTML pass-through attributes using the "html-" prefix.

[Deepak]

The new 3,000 total limit includes the maximum number of custom objects created and installed in your org. For example, in Unlimited Edition, you can create up to 2,000 custom objects in your org. On top of that limit, you can also install up to 1,000 custom objects from managed packages.

[Deepak]

A controller extension is any Apex class containing a constructor that takes a single argument of type ApexPages. StandardController or CustomControllerName , where CustomControllerName is the name of a custom controller you want to extend.

[Deepak]

In case of Contact object,
SELECT COUNT() FROM Contact WHERE AccountId = a.Id ALL ROWS

[Deepak]

System Mode runs Apex code while ignoring the user's permissions and privileges.On the Salesforce platform, only Anonymous Apex and standard controllers can be executed in User Mode i.e. it only runs Apex code by respecting the user's permissions and sharing of records.

[Deepak]

Recursive triggers can be prevented when you can create a class with a static Boolean variable with default value true. In the trigger, before executing your code keep a check that the variable is true or not. Once you check make the variable false.

[Deepak]

In Classic, go to Setup | Data Management | Schema Settings and Enable "Manage List Custom Settings Type". By enabling this option, users will have the ability to create List Custom Setting type.

[Deepak]

Yes, we can add but to that particular object detail page.

[Deepak]

1. Click the gear icon (Gear Icon), then select Developer Console.
2. In the Developer Console, select File > New > Lightning Component.
3. Name the component as per your requirement, select Lightning Record Page, and select Submit.

[Deepak]

Subscribe to Platform Event Messages with Processes. Processes can subscribe to platform events and receive event messages published through Apex, APIs, flows, or other processes. Processes provide an autosubscription mechanism.In the process's trigger, associate the process with a platform event and an object.

[Deepak]

WITH SECURITY_ENFORCED clause, you can use this to enable checking for field- and object-level security permissions on SOQL SELECT queries, including subqueries and cross-object relationships.

[Deepak]

No, we cannot assign two profiles to same user.

[Deepak]

ISNEW() will check if the formula you create is running when a new record is created and will return TRUE if it is. If the record is being edited, the function returns FALSE.

[Deepak]

Owner-Based Sharing Rules
An owner-based sharing rule opens access to records owned by certain users. For example, a company’s sales managers need to see opportunities owned by sales managers in a different region. The U.S. sales manager could give the APAC sales manager access to the opportunities owned by the U.S. team using owner-based sharing.
Criteria-Based Sharing Rules
A criteria-based sharing rule determines with whom to share records based on field values. For example, you have a custom object for job applications, with a custom picklist field named “Department.” A criteria-based sharing rule could share all job applications in which the Department field is set to “IT” with all IT managers in your organization.
Note

[Deepak]

Sandbox templates allow you to pick specific objects and data to copy to your Full or Partial Copy sandbox to control the size and content of each sandbox. The sandbox template editor understands the relationships that are defined in your Salesforce org's object schema.

[Deepak]

The report builder preview shows a maximum of 20 rows for summary and matrix reports, and 50 rows for tabular reports. In Salesforce Classic, you can't have more than 250 groups or 4,000 values in a chart.

[Deepak]

A lead queue is a place to store unassigned leads. We can manually assign leads to a lead queue or automatically using assignment rules.

[Deepak]

Aura is an open-source UI framework built by Salesforce for developing dynamic web apps for mobile and desktop devices.To build lightning components in salesforce lightning we use the Lightning component framework.The Lightning Component framework is built on the open-source Aura framework.

[Deepak]

We can display up to 2000 records on a page. If more records are there to display we cannot see those through user interface. If you export the records to a excel sheet then you can export all records.

[Deepak]

The maximum size of visualforce page is 128KB.