OutSystems - Becoming a Reactive Web Developer
questions with verified answers
A Block can be used...
A. Only inside other Screens.
B. Inside Screens and Blocks, including itself.
C. Inside Screens and Blocks, except on itself.
D. Only inside other Blocks. Ans✓✓✓ C.
A developer should favor using a Structure instead of the Entity in the
output of a SELECT SQL Query. Do you agree with this statement?
A. Yes, because queries become easier to maintain.
B. Yes, because queries will retrieve fewer Attributes and less data.
C. No, since it is exactly the same.
D. No, it is preferable to use the Entity instead of the Structure.
Ans✓✓✓ B.
Attributes of static entities can be mandatory or not. A value is only
required to be set if the attribute is mandatory.
A. True
B. False Ans✓✓✓ A.
,Business concepts that need to be stored and accessed in our
applications should be modeled as...
A. Entities.
B. Entity diagrams.
C. Entity relationships.
D. Database tables. Ans✓✓✓ A.
Client Actions and Server Actions can have the following variables:
A. Input and Output Parameters, but no Local variables.
B. Input Parameters and Local Variables, but no Output Parameters.
C. Input and Output Parameters, as well as Local Variables.
D. Output Parameters and Local Variables, but no Input Parameters.
Ans✓✓✓ C.
Consider a Form with a Save button with the Built-in Validations
property set to Yes. When a user clicks on the Save button, some
validations over the data submitted to the Form are automatically
performed by OutSystems by default. Which validations are those?
A. Check if the mandatory fields are filled in.
,B. Check if the mandatory fields are filled in and if the non-mandatory
fields, that are later used in the logic, are also filled in.
C. Check if the mandatory fields are filled in and if the data submitted
by the user matches the data type expected in the input fields.
D. Check if the mandatory fields are filled in and if the data submitted
by the user matches the data type of the Form's data source. Ans✓✓✓
C.
Consider a Screen that contains a Form to collect Customer data. The
Form has a Save Button with the On Click Destination set to a
SaveOnClick Action, which sends the data to the server to store it in the
database. What is the best way to make sure that we do not send the
data to the server when the mandatory Customer data fields have not
been filled in?
A. Just set the Built-in validations of the Save button to Yes.
B. Perform custom validations for all inputs. If one fails, set the Valid
property of the Form to False.
C. Set the Built-in validations of the Save button to Yes and check if the
Form's Valid property is True.
D. Set the Built-in validations of the Save button to Yes and add an
Exception Handler flow to handle invalid inputs. Ans✓✓✓ C.
Consider an Aggregate with a "With or Without" join between two
entities. What is the expected output of the Aggregate?
, A. All records from both Entities (FULL OUTER JOIN).
B. Only records where there is a match between the two Entities
(INNER JOIN).
C. All records from the left entity even if there is no match in the right
entity (LEFT JOIN).
D. All records from the right entity even if there is no match in the left
entity (RIGHT JOIN). Ans✓✓✓ C.
Consider an Aggregate with the Fetch property set to Only On Demand.
When does that Aggregate run?
A. Automatically, when the Screen is initializing.
B. Programmatically, using a Refresh Data node in a Screen Action.
C. Automatically, when the Aggregates set to run "At Start" finish.
D. Programmatically, using a Server Action. Ans✓✓✓ B.
Consider that we want to apply aggregation functions in an Aggregate.
Which of the following options is false?
A. We can apply multiple aggregation functions inside an Aggregate.
B. The output of the Aggregate will contain all attributes from the
Source Entities plus the aggregation columns.
C. We can apply the following functions on attributes of integer data
type: sum, max, min, count and average.
questions with verified answers
A Block can be used...
A. Only inside other Screens.
B. Inside Screens and Blocks, including itself.
C. Inside Screens and Blocks, except on itself.
D. Only inside other Blocks. Ans✓✓✓ C.
A developer should favor using a Structure instead of the Entity in the
output of a SELECT SQL Query. Do you agree with this statement?
A. Yes, because queries become easier to maintain.
B. Yes, because queries will retrieve fewer Attributes and less data.
C. No, since it is exactly the same.
D. No, it is preferable to use the Entity instead of the Structure.
Ans✓✓✓ B.
Attributes of static entities can be mandatory or not. A value is only
required to be set if the attribute is mandatory.
A. True
B. False Ans✓✓✓ A.
,Business concepts that need to be stored and accessed in our
applications should be modeled as...
A. Entities.
B. Entity diagrams.
C. Entity relationships.
D. Database tables. Ans✓✓✓ A.
Client Actions and Server Actions can have the following variables:
A. Input and Output Parameters, but no Local variables.
B. Input Parameters and Local Variables, but no Output Parameters.
C. Input and Output Parameters, as well as Local Variables.
D. Output Parameters and Local Variables, but no Input Parameters.
Ans✓✓✓ C.
Consider a Form with a Save button with the Built-in Validations
property set to Yes. When a user clicks on the Save button, some
validations over the data submitted to the Form are automatically
performed by OutSystems by default. Which validations are those?
A. Check if the mandatory fields are filled in.
,B. Check if the mandatory fields are filled in and if the non-mandatory
fields, that are later used in the logic, are also filled in.
C. Check if the mandatory fields are filled in and if the data submitted
by the user matches the data type expected in the input fields.
D. Check if the mandatory fields are filled in and if the data submitted
by the user matches the data type of the Form's data source. Ans✓✓✓
C.
Consider a Screen that contains a Form to collect Customer data. The
Form has a Save Button with the On Click Destination set to a
SaveOnClick Action, which sends the data to the server to store it in the
database. What is the best way to make sure that we do not send the
data to the server when the mandatory Customer data fields have not
been filled in?
A. Just set the Built-in validations of the Save button to Yes.
B. Perform custom validations for all inputs. If one fails, set the Valid
property of the Form to False.
C. Set the Built-in validations of the Save button to Yes and check if the
Form's Valid property is True.
D. Set the Built-in validations of the Save button to Yes and add an
Exception Handler flow to handle invalid inputs. Ans✓✓✓ C.
Consider an Aggregate with a "With or Without" join between two
entities. What is the expected output of the Aggregate?
, A. All records from both Entities (FULL OUTER JOIN).
B. Only records where there is a match between the two Entities
(INNER JOIN).
C. All records from the left entity even if there is no match in the right
entity (LEFT JOIN).
D. All records from the right entity even if there is no match in the left
entity (RIGHT JOIN). Ans✓✓✓ C.
Consider an Aggregate with the Fetch property set to Only On Demand.
When does that Aggregate run?
A. Automatically, when the Screen is initializing.
B. Programmatically, using a Refresh Data node in a Screen Action.
C. Automatically, when the Aggregates set to run "At Start" finish.
D. Programmatically, using a Server Action. Ans✓✓✓ B.
Consider that we want to apply aggregation functions in an Aggregate.
Which of the following options is false?
A. We can apply multiple aggregation functions inside an Aggregate.
B. The output of the Aggregate will contain all attributes from the
Source Entities plus the aggregation columns.
C. We can apply the following functions on attributes of integer data
type: sum, max, min, count and average.
