Mendix Advanced Certification Guide 2025: Exam Prep & Practice Questions

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Mendix Advanced Certification 2025 Exam | Actual

Questions and Verified Answers | Already Graded A

What is a Persistable entity? .....ANSWER.....An Entity that can be

saved in the database.

What is a Non-Persistable entity? .....ANSWER.....An entity that

can only be saved in runtime memory.

What is a Generalized entity? .....ANSWER.....An entity that lends

its attributes, associations, event handlers, validation rules and

any other properties to another entity.

What is a Specialized entity? .....ANSWER.....An entity that

inherits all or part of its attributes, associations, event handlers,

validation rules and any other properties from another entity.

what are the system member properties?

.....ANSWER.....CreatedDate, ChangedDate, Owner, ChangedBy

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How do you show multiple specialized entities in the same list

view? .....ANSWER.....By adding a template for every specialized

entity while using the default for the generalized entity.

What do you need to do after an Object type decision?

.....ANSWER.....Cast to entity to the correct specialization.

What should you do if the Object type decision is empty?

.....ANSWER.....Create a log message, since this is unexpected

behavior.

Why should you use inheritence? .....ANSWER.....It allows you to

make reusable microflow, which increases the consistency and

maintainability of your app.

when should you use a 1-1 association over inheritance?

.....ANSWER.....when the entity in question isn't a true

specialization of the generalized entity and/or the generalized

entity's properties are not required when dealing with the entity

in question.

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Why is creating a new entity and making it a specialization of

the FileDocument or Image entity preferred over using original

entities? .....ANSWER.....The original entities are part of the

System module, which makes them ineditable.

What indicates ownership over an association. .....ANSWER.....A

dot on that entity's side of the association.

What is the main downside of a 'many to many' association

.....ANSWER.....It uses a lot more memory that other associations.

What is an index? .....ANSWER.....An extra table for a given

entity in the database with ID's and a specified attribute(s) in a

sorted order which allows for faster queries.

When do you use an index? .....ANSWER.....On entities with a lot

of objects that are read more than written and on the most

searched attributes, that also have many possibilities.

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What is the downside of an index? .....ANSWER.....every time an

object is added, the entire index table needs to be updated,

which can potentially cause performance issues.

What are the 4 stages of a domain model restructering?

.....ANSWER.....1. extend your domain model

2. model the data conversion

3. deploy the new model and convert the data.

4. clean up the model.

What does the expression [reversed ()] do? .....ANSWER.....it tells

mendix to reverse the direction in which a association is read.

What does localization on a datetime attribute do?

.....ANSWER.....It changes the datetime value to the time zone of

the user when used or viewed. The value is still stored on UTC

time.