Believable DEX-450 Guide Materials: Programmatic Development using Apex and Visualforce in Lightning Experience Present You the Most Popular Exam Dumps - Pass4sures

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Salesforce DEX-450 Exam Syllabus Topics:

Topic	Details
Topic 1	Write a query that traverses a child-to-parent and parent-to-child relationship Creating Roll-Up Summary Fields
Topic 2	Write tests for action methods, getters, setters, and properties List the differences between the ways you can invoke DML operations
Topic 3	Describe practices for writing code that is easy to maintain and extend Write triggers and classes that assume batches of data as input
Topic 4	Write a basic query using Salesforce’s query language, SOQL Write Apex to invoke DML operations and handle DML errors
Topic 5	Describe the memory lifecycle for static attributes Use Platform Events for Immediate Error Logging
Topic 6	Process the result of a query in Apex Understanding Record Types Use trigger context variables
Topic 7	Describe strategies for Testing Visualforce controllers Use SOQL to Query Parent-Child Relationships

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q84-Q89):

NEW QUESTION # 84
A developer created a Visualforce page and custom controller to display the account type field as shown below. Custom controller code: public class customCtrlr{ private Account theAccount; public String actType; public customCtrlr() { theAccount = [SELECT Id, Type FROM Account WHERE Id = :apexPages.currentPage().getParameters().get('id')]; actType = theAccount.Type; } } Visualforce page snippet: The Account Type is {!actType} The value of the account type field is not being displayed correctly on the page. Assuming the custom controller is property referenced on the Visualforce page, what should the developer do to correct the problem?

A. Add a getter method for the actType attribute.
B. Add with sharing to the custom controller.
C. Convert theAccount.Type to a String.
D. Change theAccount attribute to public.

Answer: A

NEW QUESTION # 85
A develop created these three roll-up summary fields on the custom object. Project_c:

The developer is asked to create a new field that should the ratio between rejected and approved timesheet for a given project.
What are two benefits of choosing a formula held instead of an Apex trigger to fulfill the request? Choose 2 answers

A. A test class will validate the formula field during deployment.
B. A formula field will calculate the retroactively for existing records
C. Using a formula field reduces maintenance overhead.
D. A formula field will trigger existing automation when deployed.

Answer: B,D

NEW QUESTION # 86
What is an important consideration when developing in a multi-tenant environment?

A. Unique domain names take the place of namespaces for code developed for multiple orgs on multiple instances.
B. Governor limits prevent tenants from impacting performance in multiple orgs on the same instance.
C. Polyglot persistence provides support for a global, multilingual user base in multiple orgs on multiple instances.
D. Org-wide data security determines whether other tenants can see data in multiple orgs on the same instance.

Answer: B

NEW QUESTION # 87
A developer created a Lightning web component called statusComponent to be inserted into the Account record page.
Which two things should the developer do to make the component available?

A. Add < masterLabel>Account</master Label> to the statusComponent.js-meta ml file.
B. Add<target> Lightning_RecordPage </target> to the statusComponent.js file.
C. Add <isExposed> true</isExposed> to the statusComponent.js-meta ml file.
D. Add <target> lighting _RecordPage </target> to the statusComponent.js-meta ml file.

Answer: C,D

NEW QUESTION # 88
A developer needs to display all of the available fields for an object.
In which two ways can the developer retrieve the available fields if the variable myObject represents the name of the object? (Choose two.)

A. Use getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.
B. Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.
C. Use myObject.sObjectType.getDescribe().fieldSet() to return a set of fields.
D. Use mySObject.myObject.fields.getMap() to return a map of fields.

Answer: B,D

NEW QUESTION # 89
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