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Clone Function is used to copy the selected record. Just to make code easier and not to mention the fields in code, you can use fieldset and retrieve those fields in code.

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clear() is used to removes all elements from a list, consequently setting the list's length to zero

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B2B: (Business to Business) It is used to the selling of products/services from one business to another. B2B sales relationships have a longer lifespan, as the processes involved in closing a sale are lengthier.
B2C: (Business to Customer) It is used to the selling of products to an individual customer. The B2C sales cycle is shorter, as the customer is encouraged to purchase the product on the spot.

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Trim function removes the specified substring from the beginning and end of a string. this function is used to remove leading and trailing spaces, do not specify a substring.

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URLFOR function returns a relative URL for an action, s-control, Visualforce page, or a file in a static resource archive in a Visualforce page.

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@InvocableMethod annotation used to identify methods that can be run as invocable actions. Invocable methods are called with the REST API and used to invoke a single Apex method. Invocable methods have dynamic input and output values and support describe calls.

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Lookup relationship is a type of Salesforce relationship that is used for where you need to have a relationship between two objects without affecting their properties and also their security. It can be one-to-one or one-to-many relationship. For example, an account to opportunity relationship is one-to-many because a single account can have many related opportunities.

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Steps of add summary formula in the report:
1. create a report
2. From the Groups section, select a field from the Add group... lookup menu under GROUP ROWS.
3. From the Columns section, click Show More | Add Summary Formula Column.
4. Enter a name for the summary formula column.
5. Choose the Formula Output Type.
6. Enter a summary formula.
7. To see if your formula contains errors, click Check Syntax. Resolve any errors.
8. Click Apply.
9. Click Save.

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No..We can't edit trigger written on manage package.

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Salesforce accounts are business accounts which stores companies/organization information.
Person accounts are used to store information about individual consumers. Personal account is different compared to Business accounts in salesforce. It doesn’t have contacts and it acts as the contact. It stores first name, last name, and other details.

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Custom validation rule are the one which is created manually under the object. All the validations we build ( using validation rules/ VF page ) are the custom validations.

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WhoID: It refers to people's things. So that would be typically a Lead ID or a Contact ID. It represents a human such as a lead or a contact. It is polymorphic. Polymorphic means a WhoId is equivalent to a contact’s ID or a lead’s ID. The label is Name ID.
WhatID: It refers to object type things. That would typically be an Account ID or an Opportunity ID. The WhatId represents nonhuman objects such as accounts, opportunities, campaigns, cases, or custom objects. WhatIds are polymorphic. Polymorphic means a WhatId is equivalent to the ID of a related object. The label is Related To ID.

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Go in your Personal Settings -> Enter Customize in Quick find box -> Select Customize My Pages.
- To add or remove related lists, select a related list and click the Add or Remove arrow.
Note
- To change the order of the related lists, select a related list title in the Selected List box, and click the Up or Down arrow.
Save your changes.

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Salesforce Lightning is a platform that provides tools to build next-generation UI and UX in Salesforce. It helps organizations to create a modern productivity-boosting user experience.

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These commands that can be used with Ant Migration :
1. ant bulkRetrieve: Retrieve all the items of a particular metadata type.
2. ant retrieveUnpackaged: Retrieve an unpackaged set of metadata from your org.
3. ant retrievePkg: Retrieve metadata for all the packages specified under package names
4. ant deployUnpackaged: Deploy the unpackaged set of metadata retrieved with retrieve packaged and run tests in this organization’s namespace only
5. ant deployZip: Deploy a zip of metadata files to the org
6. ant deployCode: Upload the contents of the “codepkg” directory, running the tests for just 1 class
7. ant deployCodeNoTestLevelSpecified: Shows deploying code with no TestLevel specified

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A many-to-many relationship exists when one or more items in one table can have a relationship with one or more items in another table. For example: Your Order table contains orders placed by multiple customers (who are listed in the Customers table), and a customer may place more than one order.
To create many-to-many relationships, you need to create a new table to connect the other two. This new table is called an intermediate table (or sometimes a linking or junction table).

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Ant Migration Tool is a Java/Ant-based command-line utility for moving metadata between a local directory and a Salesforce organization. You can use the Ant Migration Tool to retrieve components, create the scripted deployment, and repeat deployment patterns.

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Enter My Domain in the Quick Find box
- select My Domain,
- then select Deploy to Users.
-The domain is activated immediately, and your users are redirected to pages with the new domain.

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there are a few reasons why you could have lost your data in that situation. You can simply provide some that you think are the most likely to have been the cause. Just to give you a few examples: migrating settings from other types of data, changing the settings of the dataset, altering the text area, etc.

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Yes, You can use it.

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Standard fields are predefined fields that are included as standard within the Salesforce application. Standard fields cannot be deleted, but non-required standard fields can be removed from page layouts whenever needed. Both standard and custom objects contain a few common standard fields. e.g. Name.

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We can use these steps to avoid recursive workflow rules: In the workflow Evaluation Criteria, if you choose created, and any time it’s edited to subsequently meet criteria option, we can avoid recursive workflow rules.
If you don't enable Re-evaluate Workflow Rules after Field Change checkbox in the Field Update of a workflow rule we can avoid.

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A dashboard is the graphical representation of the data generated by a report (or multiple reports) at a certain point in time. So it's a snapshot of data, to obtain the latest data you need to refresh them either manually or in a scheduled manner.

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GroupStructures(pairs): this method returns available category groups along with their data category structure for objects specified in the request.

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Remote action allows you to call the method from javascript yourself and retrieve the result as a javascript object for manipulation. these methods are static and global, hence don’t have access to your current controller variables and methods.@RemoteAction offers more flexibility. and it helps in reducing View State size and also provides you real-time transactions.