PD1 Flashcards

All 50 terms

Lightning Platform

Salesforce's application platform, where custom apps are built with declarative tools and code on shared infrastructure.

Multitenancy

Many customer orgs share the same infrastructure; this is why governor limits and metadata-driven design exist.

Governor limits

Runtime limits (queries, DML, CPU and more) that Apex must respect so no single org monopolises shared resources.

MVC (Model-View-Controller)

The separation of data (objects and fields), presentation (pages and components) and logic (controllers) that platform development follows.

sObject

The Apex representation of any database object, standard or custom; an sObject variable holds one record.

Lookup relationship

A loose link between objects; the child record can exist without a parent.

Master-detail relationship

A tight link where the detail record needs its master, inherits its sharing and is deleted with it; enables roll-up summaries.

Junction object

A custom object with two master-detail relationships, modelling a many-to-many relationship.

External ID

A custom field flagged so integrations can match records against an outside system's key, typically in upserts.

Formula field

A read-only field calculated when viewed, based on other fields; its value is not stored.

Roll-up summary field

A field on the master record that counts, sums or aggregates values from its detail records; requires master-detail.

Agentforce

Salesforce's AI agent layer; developers should know its use cases, its limits, and how agent actions can invoke Apex.

Apex

Salesforce's strongly typed, object-oriented, Java-like language that runs on the platform's servers.

Apex interface

A contract listing method signatures that an implementing class must define.

Apex trigger

Apex code that runs automatically before or after records are inserted, updated, deleted or undeleted.

Trigger context variables

Variables such as Trigger.new, Trigger.old and Trigger.isInsert that describe the records and event a trigger is handling.

Before vs after trigger

Before triggers can modify the records being saved without extra DML; after triggers see saved records with IDs, for related-record work.

Bulkification

Writing Apex to handle up to 200 records at a time, keeping queries and DML out of loops so governor limits hold.

SOQL

Salesforce Object Query Language; retrieves records from one object, including fields from related records.

SOSL

Salesforce Object Search Language; text-searches across multiple objects in a single operation.

DML

Data Manipulation Language operations in Apex: insert, update, upsert, delete, undelete and merge.

Collection (List, Set, Map)

Apex's three collection types: ordered lists allowing duplicates, unordered unique sets, and key-value maps.

Save order of execution

The fixed sequence when a record is saved: before triggers, then validation rules, then the save, after triggers, and subsequent automation.

Exception handling

Using try-catch-finally blocks to deal with runtime errors such as DmlException instead of failing the whole transaction.

Flow

The declarative automation tool built in Flow Builder; the default choice for point-and-click logic.

Record-triggered flow

A flow that runs automatically when records are created, updated or deleted; the declarative counterpart to a trigger.

Future method

An @future-annotated static method that runs asynchronously in its own transaction, commonly used for callouts.

Queueable Apex

Asynchronous Apex that can take complex parameters and chain jobs, more flexible than future methods.

Batch Apex

Asynchronous processing of very large record volumes in chunks, via the Database.Batchable interface.

with sharing vs without sharing

Class keywords deciding whether the running user's record-sharing rules are enforced during execution.

Lightning Web Components (LWC)

The modern component framework built on web standards; the default for new UI development.

Aura components

The original Lightning component framework; older than LWC but still supported, and the two can interoperate.

Visualforce

The older page-centric markup framework; still supported and still on the exam, but no longer the default choice.

@AuraEnabled

The annotation that exposes a static Apex method (or property) to Lightning components.

Wire service (@wire)

The LWC mechanism that provisions data reactively, re-running when its reactive parameters change.

Custom event

The standard way an LWC child component communicates upward to its parent, via dispatchEvent.

Lightning Data Service

Built-in record access for Lightning components with caching and sharing enforcement, no Apex required.

Field-level security (FLS)

Controls which fields a user can see or edit; Apex serving a UI must enforce it, for example with Security.stripInaccessible.

@isTest

The annotation marking test classes and methods; test code is isolated and does not count against org code size limits.

Test.startTest() and Test.stopTest()

Methods giving tested code a fresh set of governor limits and forcing asynchronous jobs to finish at stopTest.

Code coverage

The share of Apex lines executed by tests; production deployments require 75% overall, and assertions prove behaviour.

System.runAs()

A test-only method that runs a code block in another user's context, enforcing that user's record sharing.

Sandbox

A copy of a production org used for development, testing or training, refreshed from production.

Scratch org

A short-lived, source-driven org created from a configuration file in Salesforce DX workflows.

Salesforce DX

The source-driven development toolset: version-controlled source, scratch orgs and CLI-based automation.

Salesforce CLI

The command-line tool for creating orgs, deploying source, running tests and scripting development tasks.

Change set

The point-and-click way to move customisations between related orgs, such as sandbox to production.

Developer Console

The browser-based development environment for writing code, running queries and inspecting logs.

Debug log

The recorded trace of a transaction's execution, used to diagnose behaviour and performance.

Trailhead

Salesforce's free learning platform, home to the official prep materials and the annual certification maintenance badges.