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SAP Exam C_HANADEV_18 Topic 7 Question 22 Discussion

Actual exam question for SAP's C_HANADEV_18 exam
Question #: 22
Topic #: 7
[All C_HANADEV_18 Questions]

What statement must you insert to the following OData service to complete the navigation definition from the customer entity set to the corresponding sales orders? Please choose the correct answer.

service{ "sample.odata::customer" as customer" navigates ("Customer_Orders* as "toOrders); "sample.odata::salesorder" as "Orders";)

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Suggested Answer: B

To complete the navigation definition from the customer entity set to the corresponding sales orders, you need to insert an association statement between the two entity sets. An association defines a relationship between two entity sets based on a referential constraint, which specifies the foreign key and the principal key properties that link the entity sets.An association also defines the cardinality and the role names of the entity sets involved in the relationship1. In this case, the association statement should look something like this:

association Customer_Orders with referential constraint principal customer key CustomerID dependent Orders key CustomerID multiplicity ''1'' to ''*'';

This statement defines an association named Customer_Orders that relates the customer entity set with the Orders entity set based on the CustomerID property. The principal role is assigned to the customer entity set, which means that each customer entity can have zero or more related Orders entities.The dependent role is assigned to the Orders entity set, which means that each Orders entity must have exactly one related customer entity2.

The other options are not correct because:

Aggregation: This is a feature of calculation views that allows you to define measures and attributes for analytical queries.It is not related to OData service definitions3.

Key specification: This is a clause that you use to define the key properties of an entity type in an OData service definition.It is not used to define navigation between entity sets1.

Join condition: This is a clause that you use to specify how to join two tables or views in a SQL statement.It is not used to define navigation between entity sets4.


by Jess at Mar 15, 2024, 02:38 AM

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Natalya
9 months ago
I see where you're coming from, Key specification could also be a valid answer for this question.
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Arthur
9 months ago
But could it be C) Key specification? That also sounds relevant to defining the navigation between entities.
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Octavio
10 months ago
I agree with the statement should specify an association between the customer entity set and the sales orders.
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Natalya
10 months ago
I think the answer is B) Association because it defines a relationship between two entity sets.
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William
10 months ago
I believe the answer is B) Association, as it establishes the connection between entities based on a relationship.
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Cassie
10 months ago
Haha, this is a classic OData exam question. Definitely B) Association, no doubt about it. Time to show off my OData expertise!
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Juan
9 months ago
I think it's C) Key specification.
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Juan
9 months ago
I agree, it's definitely B) Association.
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Remona
9 months ago
Agreed, it's definitely B) Association
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Lera
9 months ago
I think it's C) Key specification.
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Remona
9 months ago
B) Association
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Lera
9 months ago
I agree, it's definitely B) Association.
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Twana
10 months ago
Wait, is this a trick question? I'm going with A) Aggregation. Gotta love those tricky OData questions!
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Kathrine
10 months ago
This is easy! The answer is clearly C) Key specification. You need to specify the key properties to link the customer and sales order entities.
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Edelmira
10 months ago
It must be D) Join condition. The navigation is defined by the join condition between the two entities.
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Lyda
10 months ago
D) Join condition
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Eleni
10 months ago
B) Association
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Chaya
10 months ago
I'm not sure if it's B) Association. Maybe it could also be C) Key specification?
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Stacey
11 months ago
The correct answer is B) Association. The navigation definition from the customer entity set to the sales orders should be defined using an association.
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Eve
11 months ago
I agree with Ryan, because we need to define the relationship between customer and sales orders.
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Ryan
11 months ago
I think the correct answer is B) Association.
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