Exam (elaborations)

Mendix Advanced Exam | Questions with 100% Correct Verified Answers

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Mendix

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Mendix

The Mendix Client is: - Answer Built on a combination of HTML, CSS, and JavaScript and runs in your browser. Static resources in Mendix: - Answer Include stylesheets transmitted in CSS format to the client. The Communication between the Mendix Runtime and Database Server: - Answer Includes com...

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mendix advanced exam questions

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Mendix Advanced Exam | Questions with 100%
Correct Verified Answers

The Mendix Client is: - Answer Built on a combination of HTML, CSS, and JavaScript and
runs in your browser.

Static resources in Mendix: - Answer Include stylesheets transmitted in CSS format to
the client.

The Communication between the Mendix Runtime and Database Server: - Answer
Includes communication between the supported database servers using JDBC.

What is NOT an advantage of using the database source option versus the XPath option?
- Answer The database source option can be used to specify constraints that span
entities.

When you want to show a list of shipped orders, will the Database data source generate
a different request than the XPath data source option? - Answer No, the database data
source will always lead to the same request as the XPath data source.

Which of the following is not a possible source of data for a microflow? - Answer A page
passed as input parameter by another microflow.

Is the following statement true or false? By association will always be an in-memory
retrieve. - Answer False, if objects aren't available in memory, a retrieve by association
will automatically result in a database retrieve.

,Is there ever a reason to retrieve an object from database instead of over association? -
Answer Yes, in cases where constraints other than a single association are applicable or
where stored database values are required.

In which microflow will the combination retrieve and aggregation be optimized? -
Answer A (aggregated list not used later in flow)

What is an important rule to keep in mind when creating effective indexes? - Answer
The index should have the same order of attributes defined as in search and retrieve
queries in order to be available for queries.

Which of the following is NOT a benefit that XPath provides to the Mendix Platform? -
Answer XPath can be used to automatically generate pages and widgets to show data
on.

What does the following XPath query return? //Product
[OrderManagement.OrderLine_Product/OrderManagement.OrderLine
/OrderManagement.OrderLine_Order != $Order] - Answer All the products that are
ordered at least once, but not on the affected order.

This XPath query can be optimized as follows: [OrderManagement.OrderLine_Product
/OrderManagement.Product/MinimalStock > 50]
[OrderManagement.OrderLine_Product /OrderManagement.Product/Status = 'Active']]
- Answer [OrderManagement.OrderLine_Product/OrderManagement.Product
[MinimalStock > 50 and Status = 'Active'] ]

The request as result of this XPath can be optimized as follows:
[OrderManagement.Stock_Product /OrderManagement.Product/Status = 'Deactivated'
or OrderManagement.Stock_Supplier /OrderManagement.Supplier/Active = false()] -
Answer The request can be optimized by splitting it into different requests and joining
the results.

, Which of the following statements is NOT an XPath best practice with regards to optimal
performance? - Answer Do not use XPath when you can use SQL instead.

Consider a situation in which there is an entity called Request with an attribute status
that has three values: Draft, Submitted, and Approved. There are three user roles:
Administrator, Customer, and Employee. The Customer user role is granted the
Customer module role. The only access rule configured is read/write access for the
Customer with the XPath [Status = Draft] applied. What would a user with the Customer
user role see on a page with a data grid without any additional XPath constraints? -
Answer All the requests in the Draft status.

Consider the exact same situation as above. What would Admin users see? - Answer No
results would be returned.

Consider the same situation again. What would happen if you granted Admin users
access to a page with the Request entity in Studio Pro? - Answer Studio Pro would
detect an error and prevent a deployment.

How does the platform use entity access XPaths to enforce security? - Answer The
XPaths are added to all the relevant database retrieves.

Where are entity access restrictions applied? - Answer On relevant database retrieves.

Which of the following best describes how the Mendix platform applies entity access? -
Answer The platform only grants the access explicitly defined in the entity access rules.

In this domain model, assume that House is a specialization of Building: - Answer Admin
users will be able to read the SquareFoot attribute in data views for Buildings and read
and write in data views for Houses.

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