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Interview Questions and Answers

Custom Metadata Types are customizable, deployable, packageable, and upgradeable metadata. They allow you to create your own configuration data that you can easily deploy between environments. They are useful for defining business rules, configuration settings, or other metadata-driven behavior.

Apex supports three main types of collections: Lists (ordered collections of elements), Sets (unordered collections of unique elements), and Maps (collections of key-value pairs).

Salesforce can be integrated with external systems using various methods, including REST APIs, SOAP APIs, and middleware platforms like MuleSoft. Apex callouts can be used to make HTTP requests to external services, and inbound web services can be created to allow external systems to interact with Salesforce.

Triggers are Apex code that executes before or after certain events occur in Salesforce, such as inserting, updating, or deleting records. Workflows are declarative tools that automate business processes by defining rules and actions. Triggers offer more flexibility and control but require coding, while workflows are easier to configure but have limitations.

Queueable Apex allows you to enqueue asynchronous jobs that can be chained together. Unlike future methods, Queueable Apex allows you to monitor and chain jobs, passing non-primitive data types to the queued job.

`Test.startTest()` and `Test.stopTest()` are used to create a fresh set of governor limits for the code being tested within the `Test` class. They ensure that your test code doesn't interfere with the governor limits of your production code.

Apex code must be tested to ensure its functionality and to meet Salesforce's code coverage requirements for deployment. You can create test methods using the `@isTest` annotation. Test methods should use `System.runAs` to execute code under a different user context and should use assert methods to verify expected results.

A Batch Apex class must implement the `Database.Batchable` interface, which requires three methods: `start()`, which collects the data to be processed; `execute()`, which processes each batch of records; and `finish()`, which is executed after all batches have been processed.

A batch Apex class allows you to process large volumes of data that would exceed governor limits in a normal Apex transaction. Batch Apex operates in batches of records, allowing you to process records asynchronously and avoid hitting governor limits.

You can schedule Apex code to run at a specific time using the `System.schedule()` method. This method takes three arguments: a name for the scheduled job, a Cron expression that specifies the schedule, and the name of an Apex class that implements the `Schedulable` interface.

Custom settings allow developers to create custom data sets that can be accessed throughout the application. List custom settings provide a generic list of data, useful for global settings. Hierarchy custom settings use a hierarchical logic to determine which setting value to use, based on organization, profile, or user settings.

A future method runs in its own thread, asynchronously. You can use future methods for tasks that you don't want to hold up the execution of the current process, such as making callouts to external services or performing complex calculations.

`==` compares the references of two objects (whether they point to the same memory location). `.equals()` compares the content of two objects to see if they have the same values. Use `.equals()` when you want to compare the data within the objects, especially for Strings and other complex objects.

Apex supports primitive data types like Integer, String, Date, Datetime, Boolean, ID, as well as sObjects, collections (List, Set, Map), and enums.

Exceptions in Apex can be handled using `try...catch` blocks. The `try` block contains the code that might throw an exception, and the `catch` block contains the code to handle the exception.

SOQL (Salesforce Object Query Language) is used to query Salesforce data. SOSL (Salesforce Object Search Language) is used to perform text-based searches across multiple objects and fields in Salesforce.

Governor Limits are runtime limits enforced by the Apex runtime engine to ensure that runaway Apex code or processes do not monopolize shared resources. These limits cover things like the number of SOQL queries, DML statements, CPU time, heap size, etc. Exceeding these limits will result in a runtime exception.

There are two main types of triggers: Before triggers, which are used to perform actions before data is saved to the database, and After triggers, which are used to perform actions after data is saved to the database. Each trigger can also be defined for specific events like insert, update, delete, undelete.

Apex is a proprietary, strongly-typed, object-oriented programming language developed by Salesforce.com. It's used to execute flow and transaction control statements on the Salesforce platform server, in conjunction with calls to the Salesforce APIs.

Salesforce is a customer relationship management solution that brings companies and customers together. It's one integrated CRM platform that gives all your departments — including marketing, sales, commerce, and service — a single, shared view of every c

Salesforce helps break down technology silos in your organization between departments so no matter where they are, employees in marketing, sales, commerce, service, and IT share a single customer view. Some benefits:

- Customer information.
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There are several types of SOQL queries, including those that order data, retrieve records, and aggregate records.

Salesforce is the #1 customer relationship management (CRM) platform in the world,

Custom objects can be anything—you define the object and you define the type info it contains. Steps to create custom object:

- Log in to your Salesforce account.

- Click Setup at the upper-right corner.

- Under the Build section

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the Lightning platform server in conjunction with calls to the Lightning Platform? API.

The multitenant architecture means one common application for multiple groups or clients. So, in this case, the developer can create an application, upload it onto the cloud, and share it with multiple clients.

The salesforce metadata-driven model allows the developers to create their applications easily with the help of various tools.  Metadata refers to the fields, configurations, code, logic, and page layouts that go into creating your Salesforce environment

S-Control - S-controls provide a flexible, open means of extending the Salesforce user interface, including the ability to create and display your own custom data forms.

- Governor Limit's - Salesforce Governor Limits are usage caps

SOAP API is based on SOAP WSDL protocol. It uses XML format for loaded data and synchronous processing.

Dashboards in Salesforce are a graphical representation of Reports. Salesforce dashboards have some visual representation components like graphs, charts, gauges, tables, metrics and visualforce pages.

The four types of Salesforce reports are Tabular, Matrix, Summary, and Joined.

Force.com is a platform-as-a-service (PaaS) product designed to simplify the development and deployment of cloud based applications and websites.

Explain with examples that sync with the job description.

Explain specific instances with respect to the job JD.

The primary aim of the code review is to ensure that the codebase overall product quality is maintained over time. It helps give a fresh set of eyes to identify bugs and simple coding errors. All of the tools and processes of code review are designed to t

Use a phased life-cycle plan, Continuous validation, Maintain product control, Use the latest programming practices, Maintain clear accountability for results.

Software engineering always requires a fair amount of teamwork. The code needs to be understood by designers, developers, other coders, testers, team members and the entire IT team.

Schedule, Quality, Cost, Stakeholder Satisfaction, Performance

A software project manager determines the project specifications, builds the project team, draws up a blueprint for the whole project outlining the scope and criteria of the project, clearly communicates the project goals to the team; allocates budget, an

The most common software sizing methodology has been counting the lines of code written in the application source. Another approach is to do Functional Size Measurement, to express the functionality size as a number by performing Function point analysis.

The major parts to project estimation are effort estimation, cost estimation, resource estimate. In estimation, there are many methods used as best practices in project management such as-Analogous estimation, Parametric estimation, Delphi process, 3 Poi

Quality control can be defined as a \"part of quality management concentrating on maintaining quality requirements.\" While quality assurance relates to how a process is carried out or how a product is produced, quality control is more the quality managem