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Follow these steps to retrieve metadata:
1. Open a command prompt.
2. Run Ant by specifying a target name in build.xml. If this is the first time you are running Ant, use ant retrieveUnpackaged to retrieve unpackaged components specified in package.xml.

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Apex callout enables you to tightly integrate your Apex code with an external service and also enable Apex to invoke external web services. The callout makes a call to an external web service or sends an HTTP request from Apex code, and then receives the response. This allows you to connect to 3rd party web services such as Google, Amazon, Facebook, and any other external web service.
REST and SOAP are the two web service frameworks available on the Force.com platform. The SOAP API uses authentication with username and password and communicates using XML messages. There are different APIs to work with the Enterprise, Partner, Bulk, Metadata, etc.

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<div>Follow these steps to change the opportunity stage:</div>Go to SetUp -> Click on Object Manager -> Click on Opportunity -> Field & Relationships -> Click on the field name "Stage".
Click 'New' to add a new stage under Opportunity Stage Picklist Values. Click 'Edit' next to the stage to change the probability or type of forecast category. For new Opportunity stage values, select the Sales Process to be associated. Click on Save.

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Use the below code to show the error message:
if (fieldname == null){
ApexPages.addmessage(new ApexPages.message(ApexPages.severity.WARNING,'Please enter value'));
return null;
}
Insert the below tag inside the visualforce page within page block
<apex:pageMessages ></apex:pageMessages>

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WFM Adapter provides seamless integration between Salesforce Service Cloud and WFM systems. It takes data from Salesforce and molds it to a format that can be used by WFM systems such as NICE, Aspect, Teleopti, and Verint. With the adapter, business managers can effectively manage performance and forecast work volume and staffing.

• This reply was modified 4 years ago by  Shweta.

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Kanban views show records in a graphical way that helps you monitor your work and keep deals moving ahead. Kanban views are available for most objects, with exceptions such as tasks.

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OAuth tokens are essentially permissions given to a client application. The resource server can validate the tokens and allow the client application access to the defined protected resources. In Salesforce, you can use OAuth authorization to approve a client application's access to your org's protected resources. This token authorizes access to protected resources.

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<div>Follow these steps to generate an access token:</div>1. Go to Setup -> enter Apps in the Quick Find box -> select App Manager.
2. Locate the OAuth connected app in the apps list, click Action dropdown, and select View.
3. In the Initial Access Token for Dynamic Client Registration section, click Generate if an initial access token hasn’t been created for the connected app. If a token has already been created for the app, but you require a new token, click Regenerate.
4. Regenerating the initial access token invalidates the previous one that your OAuth clients use. Update your OAuth clients to use the new token.
5. Click Click to reveal, and copy the token for registration with the app’s OAuth 2.0 client.

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Each Lightning Component is made up of a Mark-ups, JavaScript controller, a Helper, a Renderer, Documentation, and more (Component Bundle).

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Yes. In processes that have steps that are optional depending on criteria, use the skip step feature.To skip steps, use filter criteria or formula, then choose what should happen to records that do not meet the criteria.

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Field-level encryption requires encryption of any email address fields used for sending. Field-Level Encryption requires a subscriber key for each contact. All business units within an Enterprise account must use Field-Level Encryption.

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Trusted IP range: It defines a list of IP addresses from which users can log in without receiving a login challenge for verification of their identity, such as a code sent to their mobile phone.
Login IP range: You can control login access on a user’s profile by specifying a range of IP addresses. When you define IP address restrictions for a profile, any login from a restricted IP address is denied.

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To convert string to blob :
String myString = 'StringToBlob';
Blob myBlob = Blob.valueof(myString);
System.assertEquals('StringToBlob', myBlob.toString());

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Salesforce Shield Platform Encryption solution encrypts data at rest when stored on our
servers, in the database, in search index files, and the file system. To encrypt data at rest and
preserve functionality, we built the encryption services natively into the Salesforce Platform.

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Aura-based Lightning components are built using both HTML and JavaScript.
Lightning Web component: It is built directly on the Web stack. its structure relies on using code that runs natively on browsers, improving performance while making it much faster to deploy and more versatile. LWC was created basically to overcome the shortcomings of the Aura framework but not eliminating the power of the Lightning Components.

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Visualforce follows a Page-Centric model. PageCentric means that the goal of Visualforce is to create something that is your full-page interface. When the user has to perform some operation, eg Create a record or save a record, it sends that request to the Salesforce servers and then reloads the entire page with the new state of the UI. All backend processing is done with Apex Code on the Server-Side.
Lighting Component is an App-centric approach. Lightning components are part of the Salesforce user interface framework for developing dynamic web applications for desktop and mobile devices. They use JavaScript at the client-side and Apex at the server-side to provide the data and business logic.

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With the use of some important exceptions, Visualforce just works in Lightning Experience. If you've written Visualforce apps for your organization, you can expect that they work whether your users access them in Lightning Experience or Salesforce Classic.

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Follow these steps to display the VF page:
1. Go to Setup -> enter Visualforce Pages in the Quick Find box -> select Visualforce Pages to display the Pages list page, which shows all the Visualforce pages defined for your organization. From the Pages list page, you can:
2. Click New to define a new Visualforce page.
3. Click a page name to display detailed information about the page, including its label and Visualforce markup.
4. Click Edit next to a page name to modify the page’s name, label, or Visualforce markup.
5. Click the Preview button (Launch) to open the page in a new window.

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Education Data Architecture (EDA) is a community-driven data architecture designed to help educational institutions use Salesforce out-of-the-box. Built-in collaboration with our partners and customers, the Education Data Architecture (EDA) provides the foundation for your connected campus and empowers institutions of all sizes to connect with students, alumni, faculty, and staff in new ways.

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We can use the transient keyword to declare instance <em style="font-family: inherit; font-size: inherit;">variables that can't be saved, and shouldn't be transmitted as part of the view state for a <em style="font-family: inherit; font-size: inherit;">Visualforce page. We can also use the transient keyword in Apex classes that are serializable, namely in controllers, controller extensions, or classes that implement the <samp style="font-size: inherit;">Batchable</samp> or <samp style="font-size: inherit;">Schedulable</samp> interface.

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We cannot grant transfer, delete, or share permissions with Sharing rules but an all-access level can only be used by Force.com managed sharing.

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We can use the deploy() and retrieve() calls to move metadata (XML files) between a Salesforce organization and a local file system. Once you retrieve your XML files into a file system, you can manage changes in a source-code control system, copy and paste code or setup configurations, diff changes to components, and perform many other file-based development operations.

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Contact Owner is a lookup to the User object. So, when you query Contact.Owner.Email.It will lookup to contact -> Contact Owner (User) -> Email.You will get the email address of the User that owns that contact.

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Matcher class stores the results of an attempt to match a Pattern with a String, including any captured text.

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Patterns are used by matchers to perform match operations on a character string. A regular expression is a string that is used to match another string, using a specific syntax. Apex supports the use of regular expressions through its Pattern and Matcher classes.