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Arcitura Education S90.09 Exam - Topic 5 Question 35 Discussion

Our service inventory contains the following three services that provide invoice-related data access capabilities: Invoice, InvProc, and Proclnv. These services were created at different times by different project teams and were not required to comply to any design standards. Therefore each of these services has a different data model for representing invoice data. Currently each of these three services has one service consumer: Service Consumer A accesses the Invoice service(1). Service Consumer B (2) accesses the InvProc service, and Service Consumer C (3) accesses the Proclnv service. Each service consumer invokes a data access capability of an invoice-related service, requiring that service to interact with the shared accounting database that is used by all invoice-related services (4, 5, 6). Additionally, Service Consumer D was designed to access invoice data from the shared accounting database directly (7), (Within the context of this architecture. Service Consumer D is labeled as a service consumer because it is accessing a resource that is related to the illustrated service architectures.)Assuming that the Invoice service, InvProc service, and ProcInv service are part of the same service inventory, what steps would be required to fully apply the Official Endpoint pattern?
B) One of the invoice-related services needs to be chosen as the official service providing invoice data access capabilities. Service Consumers A, B, and C then need to be redesigned to only access the chosen invoice-related service. Service Consumer D also needs to be redesigned to not access the shared accounting database directly, but to also perform its data access by interacting with the official invoice-related service. The Service Abstraction principle can be further applied to hide the existence of the shared accounting database and other implementation details from current and future service consumers.
D) None of the above.
A) One of the invoice-related services needs to be chosen as the official service providing invoice data access capabilities. Service Consumers A, B, and C then need to be redesigned to only access the chosen invoice-related service. Because Service Consumer D does not rely on an invoice-related service, it is not affected by the Official Endpoint pattern and can continue to access the accounting database directly. The Service Abstraction principle can be further applied to hide the existence of the shared accounting database and other implementation details from current and future service consumers.
C) Because Service Consumers A, B, and C are already carrying out their data access via published contracts, they are not affected by the Official Endpoint pattern. Service Consumer D needs to be redesigned to not access the shared accounting database directly, but to perform its data access by interacting with the official invoice-related service. The Service Abstraction principle can be further applied to hide the existence of the shared accounting database and other implementation details from current and future service consumers.

Arcitura Education S90.09 Exam - Topic 5 Question 35 Discussion

Actual exam question for Arcitura Education's S90.09 exam
Question #: 35
Topic #: 5
[All S90.09 Questions]

Our service inventory contains the following three services that provide invoice-related data access capabilities: Invoice, InvProc, and Proclnv. These services were created at different times by different project teams and were not required to comply to any design standards. Therefore each of these services has a different data model for representing invoice data. Currently each of these three services has one service consumer: Service Consumer A accesses the Invoice service(1). Service Consumer B (2) accesses the InvProc service, and Service Consumer C (3) accesses the Proclnv service. Each service consumer invokes a data access capability of an invoice-related service, requiring that service to interact with the shared accounting database that is used by all invoice-related services (4, 5, 6). Additionally, Service Consumer D was designed to access invoice data from the shared accounting database directly (7), (Within the context of this architecture. Service Consumer D is labeled as a service consumer because it is accessing a resource that is related to the illustrated service architectures.)

Assuming that the Invoice service, InvProc service, and ProcInv service are part of the same service inventory, what steps would be required to fully apply the Official Endpoint pattern?

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Suggested Answer: B

by Edwin at Jan 26, 2026, 04:30 AM

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Sueann
24 days ago
This question is tricky. I feel like it needs a clear understanding of the services.
upvoted 0 times
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Elinore
29 days ago
Just to clarify, there are three services and four consumers, right?
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Maynard
1 month ago
Not sure if the Official Endpoint pattern will fix all these issues.
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Raymon
1 month ago
Wait, Service Consumer D accesses the database directly? Isn't that risky?
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Dell
1 month ago
Totally agree, standardization is key here.
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Floyd
2 months ago
Each service has a different data model? That's a mess!
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Aimee
2 months ago
Hmm, Service Consumer D accessing the database directly doesn't seem very efficient. Gotta love those creative developers!
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Viola
2 months ago
I'd start by identifying the common data elements across the three services and then designing a unified data model.
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Cordelia
2 months ago
Consolidating the data models and exposing a single, official endpoint for invoice data access seems like the way to go.
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Elfriede
2 months ago
The key here is to standardize the data model across the three services to apply the Official Endpoint pattern.
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Amie
3 months ago
I recall that we should also consider how to handle the direct access from Service Consumer D. Would that complicate the implementation of the Official Endpoint pattern?
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Ashlyn
3 months ago
I think we might need to define a common endpoint for all three services, but I'm a bit confused about how that would work with the existing consumers.
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Carlee
3 months ago
This reminds me of a practice question where we had to standardize service interfaces. I think we need to create a unified data model first, right?
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Alva
4 months ago
I remember we discussed the Official Endpoint pattern in class, but I'm not entirely sure how to apply it to services with different data models.
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Yuki
4 months ago
This seems like a good opportunity to introduce some consistency and standardization into the architecture. By applying the Official Endpoint pattern, I can create a single, authoritative source for invoice data that all the consumers can use.
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Lachelle
4 months ago
I think the first step would be to consolidate the three invoice-related services into a single, official invoice service. Then I'd need to ensure that all the consumers are accessing that official service, rather than the individual services directly.
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Charolette
4 months ago
Okay, the key seems to be that there are three different services representing invoice data, each with their own data model. To apply the Official Endpoint pattern, I'll need to identify a single, standardized endpoint that all the consumers can use.
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Jerry
4 months ago
I'm a bit confused by all the different services and consumers. I'll need to map out the current architecture and data flows before I can determine the best approach for applying the Official Endpoint pattern.
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Renea
5 months ago
This looks like a tricky one. I'll need to carefully analyze the different services and their relationships to figure out how to apply the Official Endpoint pattern.
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