MENDIX ADVANCED EXAM 2023-2024 CERTIFICATION ACTUAL EXAM 150 QUESTIONS AND CORRECT
DETAILED ANSWERS
Inheritance is used to: - (answer) Inherit the structure and behavior of an entity, so that all
specializations can be used individually within the same process.
What is the result of generalizing the Player entity by the Person entity? - (answer) Two tables, one per
entity
What will happen to the ID's after generalizing the Player and Staff entities by the Person entity? -
(answer) The ID's of Player and Staff will keep their own set and sequence and will equal the ID in the
Person table.
Which statement is correct?:
- A 1-1 association and inheritance are both an IS type of relation.
- A 1-1 association is an IS and inheritance is an HAS type of relation.
- A 1-1 association is a HAS and inheritance is an IS type of relation.
- A 1-1 association and inheritance are both an HAS type of relation. - (answer) - A 1-1 association is a
HAS and inheritance is an IS type of relation.
Why is it a best practice to create a specialization of the FileDocument and Image entities? - (answer)
It allows for better security and property configuration based on purpose.
What is the default value of the attribute DeleteAfterDownload? - (answer) false
Where are the file(s) or image(s) stored by default? - (answer) On the file server located on the
application server
When it is better to place Indexes? - (answer) If there are more Read than Write actions.
What happens when you apply an index? - (answer) The speed of Read actions will increase.
What is the result of the association in the image below? - (answer) A list of ID's in the Staff object.
, MENDIX ADVANCED EXAM 2023-2024 CERTIFICATION ACTUAL EXAM 150 QUESTIONS AND CORRECT
DETAILED ANSWERS
The app performance is affected by a reference set (both) because: - (answer) Both entities needs to
be joined with the reference table and data transfer increases.
Adrian wants to select a staff member for a team. Which domain model would be suitable?
A: Staff * -> * Team
B: Staff * <- * Team - (answer) B
What type of domain model changes can have an impact on the data in the database? - (answer) Type
changes and Structural changes
What are the four stages of data conversion? (multiple answers are correct) - (answer) - Deploy and
convert
- Clean up model
- Model the conversion
- Extend domain model
Why is it a best practice to redeploy your app after cleaning up the model? - (answer) You might be
confronted with unexpected and/or complex sync behavior during a next deployment.
What does the function reverse() do? - (answer) It changes the direction in which the association is
queried.
What is the best naming for a self-reference where the buddy is referenced by an apprentice? -
(answer) Apprentice_Buddy
What is the correct XPath to retrieve the goals of the buddy of an apprentice? - (answer)
[SoccerSquad.Goal_Player/SoccerSquad.Player/SoccerSquad.Apprentice_Buddy [reversed()] =
'[%CurrentObject%]']
DETAILED ANSWERS
Inheritance is used to: - (answer) Inherit the structure and behavior of an entity, so that all
specializations can be used individually within the same process.
What is the result of generalizing the Player entity by the Person entity? - (answer) Two tables, one per
entity
What will happen to the ID's after generalizing the Player and Staff entities by the Person entity? -
(answer) The ID's of Player and Staff will keep their own set and sequence and will equal the ID in the
Person table.
Which statement is correct?:
- A 1-1 association and inheritance are both an IS type of relation.
- A 1-1 association is an IS and inheritance is an HAS type of relation.
- A 1-1 association is a HAS and inheritance is an IS type of relation.
- A 1-1 association and inheritance are both an HAS type of relation. - (answer) - A 1-1 association is a
HAS and inheritance is an IS type of relation.
Why is it a best practice to create a specialization of the FileDocument and Image entities? - (answer)
It allows for better security and property configuration based on purpose.
What is the default value of the attribute DeleteAfterDownload? - (answer) false
Where are the file(s) or image(s) stored by default? - (answer) On the file server located on the
application server
When it is better to place Indexes? - (answer) If there are more Read than Write actions.
What happens when you apply an index? - (answer) The speed of Read actions will increase.
What is the result of the association in the image below? - (answer) A list of ID's in the Staff object.
, MENDIX ADVANCED EXAM 2023-2024 CERTIFICATION ACTUAL EXAM 150 QUESTIONS AND CORRECT
DETAILED ANSWERS
The app performance is affected by a reference set (both) because: - (answer) Both entities needs to
be joined with the reference table and data transfer increases.
Adrian wants to select a staff member for a team. Which domain model would be suitable?
A: Staff * -> * Team
B: Staff * <- * Team - (answer) B
What type of domain model changes can have an impact on the data in the database? - (answer) Type
changes and Structural changes
What are the four stages of data conversion? (multiple answers are correct) - (answer) - Deploy and
convert
- Clean up model
- Model the conversion
- Extend domain model
Why is it a best practice to redeploy your app after cleaning up the model? - (answer) You might be
confronted with unexpected and/or complex sync behavior during a next deployment.
What does the function reverse() do? - (answer) It changes the direction in which the association is
queried.
What is the best naming for a self-reference where the buddy is referenced by an apprentice? -
(answer) Apprentice_Buddy
What is the correct XPath to retrieve the goals of the buddy of an apprentice? - (answer)
[SoccerSquad.Goal_Player/SoccerSquad.Player/SoccerSquad.Apprentice_Buddy [reversed()] =
'[%CurrentObject%]']
