Answer:- • Standard Controllers: Standard Controllers are created for all standard Salesforce pages. They consist of the same logic and functionalities that are utilized in any standard Salesforce page. They can be easily utilized with both standard and custom objects. • Custom Controllers: Custom Controllers is a class written in Apex and it overrides the standard functionality of a standard controller of a page. It executes the logic of a page without utilizing the Standard Controllers. We use custom controllers whenever we want to run a Visualforce page fully in system mode, which means that the security and permissions of the current user will not be recognized.

Answer:- A standard field record consists of either auto-number or text field, read-only data type with a maximum limit of 80 characters. It depends on whether the field name consists of a unique text ID or numerical ID. To create auto numbers, the format should be described while defining the field and later when every record is added, the number gets auto-generated. For example:- Sr No-{1} Sr No-{2}

Answer:- We can use Lightning components for various purposes, lets see some of them: • To drag-and-drop Components in the Lightning App Builder and Community Builder. • To add more Lightning Components to Lightning Pages. • To add Lightning Components to Lightning Experience Record Pages. • To override Standard Actions.

Answer:- • Lightning Component Framework – It provides components and extensions that can be utilized to develop reusable custom components, standalone apps, and customize the Salesforce1 Mobile App. • Lightning App Builder – An UI tool that lets you build apps rapidly with the help of drag and drop components provided by Salesforce. • Lightning Connect – An integration tool to easily integrate Salesforce to consume data from any external source OData specification. • Lightning Process Builder – Lightning Process Builder in Salesforce is a visualization tool for the automation of business processes. • Lightning Schema Builder – It is a visualization tool used to view and create objects, fields, and relationships.

Answer:- Governor Limits are some of the biggest challenges for a Salesforce developer. As whenever the Apex code exceeds the limit, it issues a run-time exception and it cannot be handled. The following is the list of some of the key Governor Limits in Salesforce: • Push Notification Limits • Per-Transaction Apex Limits • com Platform Apex Limits • Size-Specific Apex Limits • Miscellaneous Apex Limits • Static Apex Limits • Email Limits

Answer:- Collections are the type of variables used to store multiple numbers of records (data). Types of collections in Salesforce are: • Lists • Maps • Sets

Answer:- Maps are used to store data in the form of key–value pairs, where each unique key maps to a single value. Syntax: Map country_city = new Map();

Answer:- An Apex transaction represents a set of operations that are executed as a single unit. These operations include DML operations that are responsible for querying records. All the DML operations in a transaction either get completed successfully or get rolled back completely if an error occurs even in saving a single record.

Answer:- A global class is accessible across the Salesforce instance, irrespective of namespaces. Whereas, public classes are accessible only in the corresponding namespaces.

Answer:- The get (getter) method is used to pass values from the controller to the VF page. Whereas, the set (setter) method is used to set the value back to the controller variable.

Answer:- The following fields are automatically indexed in Salesforce: • Custom fields marked as an external ID or a unique field • Primary keys (ID, Name, and Owner fields) • Audit dates (such as SystemModStamp) • Foreign keys (Lookup or Master-Detail relationship fields)

Answer:- A time-dependent workflow cannot be created for ‘created, and every time it’s edited.’

Answer:- A sandbox is a similar copy of a Salesforce production for testing, development, and training. The content and size of a sandbox may vary depending on the type of the sandbox and the edition of the production organization which is associated with the sandbox. There are four types of sandboxes available: • Developer Sandbox • Developer Pro Sandbox • Partial Data Sandbox • Full Sandbox

Answer:- An Apex class is a template from which Apex objects can be created. These classes consist of other classes, variables, user-defined methods, exception types, and the static initialization code.