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OutSystems - Becoming a Reactive Web Developer Latest Update - 140 Questions and 100% Verified Correct Answers Guaranteed A+

A Block can be used...

• Only inside other Screens.
• Inside Screens and Blocks, including itself.
• Inside Screens and Blocks, except on itself.

D. Only inside other Blocks. - CORRECT ANSWER: 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?

• Yes, because queries become easier to maintain.
• Yes, because queries will retrieve fewer Attributes and less data.
• No, since it is exactly the same.
• No, it is preferable to use the Entity instead of the Structure. - CORRECT ANSWER:

B.

Attributes of static entities can be mandatory or not. A value is only required to be set if the attribute is mandatory.

• True

B. False - CORRECT ANSWER: A.

Business concepts that need to be stored and accessed in our applications should be modeled as... 1 / 4

• Entities.
• Entity diagrams.
• Entity relationships.

D. Database tables. - CORRECT ANSWER: A.

Client Actions and Server Actions can have the following variables:

• Input and Output Parameters, but no Local variables.
• Input Parameters and Local Variables, but no Output Parameters.
• Input and Output Parameters, as well as Local Variables.
• Output Parameters and Local Variables, but no Input Parameters. - CORRECT

ANSWER: 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?

• Check if the mandatory fields are filled in.
• 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.

• 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.

• 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. - CORRECT ANSWER: 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? 2 / 4

• Just set the Built-in validations of the Save button to Yes.
• Perform custom validations for all inputs. If one fails, set the Valid property of the

Form to False.

• Set the Built-in validations of the Save button to Yes and check if the Form's Valid

property is True.

• Set the Built-in validations of the Save button to Yes and add an Exception Handler

flow to handle invalid inputs. - CORRECT ANSWER: C.

Consider an Aggregate with a "With or Without" join between two entities. What is the expected output of the Aggregate?

• All records from both Entities (FULL OUTER JOIN).
• Only records where there is a match between the two Entities (INNER JOIN).
• All records from the left entity even if there is no match in the right entity (LEFT

JOIN).

• All records from the right entity even if there is no match in the left entity (RIGHT

JOIN). - CORRECT ANSWER: C.

Consider an Aggregate with the Fetch property set to Only On Demand. When does that Aggregate run?

• Automatically, when the Screen is initializing.
• Programmatically, using a Refresh Data node in a Screen Action.
• Automatically, when the Aggregates set to run "At Start" finish.

D. Programmatically, using a Server Action. - CORRECT ANSWER: B.

Consider that we want to apply aggregation functions in an Aggregate. Which of the following options is false?

• We can apply multiple aggregation functions inside an Aggregate. 3 / 4

• The output of the Aggregate will contain all attributes from the Source Entities plus

the aggregation columns.

• We can apply the following functions on attributes of integer data type: sum, max,

min, count and average.

• The output of the Aggregate will not include the columns at grey. - CORRECT

ANSWER: B.

Consider the Action called Absolute

(https://drive.google.com/file/d/1whQveFFlesOJlkA1Qi4JMEV7-

oUAZU1f/view?usp=sharing) which returns an absolute value (abs) of a number N passed as Input Parameter. When does the Action return 0 ?

• Never.
• When the input parameter (N) is less than zero.
• When the input parameter (N) is zero.

D. When the input parameter (N) is greater than zero. - CORRECT ANSWER: C.

Consider the following Action (https://drive.google.com/file/d/1L6qUwd2jjqWAluUB- Kv5gQghendWoMr2/view?usp=sharing), that calculates the square root (sqrt) of a positive decimal number (N). Knowing that the function was called with N = 0, and the debugger is stopped at the Start node, what will happen when the developer selects the Continue (F9) option highlighted in the picture?

• The Action will end, with sqrt = 0.
• The Action will throw an exception and sqrt will have no value.
• The debugger will stop in the N < 0 If node.
• The debugger will stop at the breakpoint in the End node. - CORRECT ANSWER: D.

Consider the following Pagination

(https://drive.google.com/file/d/1r1xbok0WwGQ3MYyhGmj1oVDCz6rVfDA3/view?usp=s

haring) that is associated with an already implemented Table on a Screen. There are no errors in Service Studio, but when the user selects a new page (in the pagination widget) the results do not change on the Table. What is the reason for that behavior?

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