Complete The System Reference Guide For Your Employer And In
Completethe System Reference Guide For Your Employer And Include An A
Completethe System Reference Guide For Your Employer And Include An A
Complete the System Reference Guide for your employer, and include an architecture for a new employee website. First, identify the quality attributes that lead to the architecture, then create a high-level architectural diagram related to the qualities you identified for this assignment. When finished, combine these with the documents created in Weeks Two and Three. Your company is planning to build a new website that integrates employee tracking, attendance, scheduling, and time off requests. This system will also interface with an Interactive Voice Response (IVR) and a mobile application to allow employees to make attendance requests and view their data.
Part 1: Identify the quality attributes this system will need for its architecture. Construct a matrix of quality attributes (nonfunctional requirements) that you've identified. For each attribute, identify how you would satisfy the requirement through an architectural pattern. In another column, write the tradeoffs that you might encounter when satisfying this requirement by the means you listed. Part 2: Choose one of the patterns you identified in Part 1.
Create a high-level diagram that shows your architectural pattern as it is to be implemented in the system. Note: an architectural pattern is high-level, such as SOA, Layered, Client/Server, pipes-and-filters. Incorporate your diagram and matrix into a 1- to 2-page document in Microsoft ® Word. As this document is intended for a technical team, APA formatting is not required.
Paper For Above instruction
Introduction
The development of a robust, scalable, and user-friendly employee management system necessitates careful consideration of various quality attributes or nonfunctional requirements. These attributes ensure the system not only meets functional needs but also performs efficiently, securely, and reliably. The architecture of such a system must be designed in a way that aligns with these quality attributes, facilitating seamless integration with interfaces like IVR and mobile applications. This paper identifies essential quality attributes, presents a matrix linking them to architectural patterns, and illustrates a high-level architectural diagram based on a selected pattern.
Part 1: Identifying Quality Attributes and Architectural Patterns
The primary quality attributes for the employee management system include scalability, security, availability, maintainability, usability, and performance. Each attribute directly influences the architectural decisions.
1. Scalability
Scalability ensures the system can handle increased user load and data volume as the organization grows. An architectural pattern suitable for scalability is the Service-Oriented Architecture (SOA), which modularizes services for independent scaling. However, implementing SOA may introduce complexity and potential latency due to inter-service communication.
2. Security
Security is paramount, especially when dealing with sensitive employee data. A layered security architecture, incorporating authentication, authorization, and data encryption, can effectively safeguard the system. Nonetheless, this may add overhead and complexity to authentication workflows.
3. Availability
High availability minimizes downtime, crucial for HR operations. A client/server pattern with redundancy and load balancing can enhance availability. The tradeoff involves increased infrastructure costs and complexity in managing redundant servers.
4. Maintainability
Maintainability requires a modular design facilitating easy updates. The pipes-and-filters architectural pattern promotes this by decoupling processing stages. The drawback is potential performance overhead and increased design complexity.
5. Usability
Ease of use for employees interacting via web, IVR, or mobile apps is essential. A layered or client-server pattern supports a user-friendly interface with separation of concerns, but may lead to increased front-end complexity.
6. Performance
Performance demands quick response times for requests. Caching and load balancing within a client-server architecture improve performance. These solutions may increase system complexity and redundancy.
Quality Attributes Matrix
| Attribute | Architectural Pattern | Tradeoffs |
|---|---|---|
| Scalability | Service-Oriented Architecture (SOA) | Potential latency, increased complexity |
| Security | Layered Security Architecture | Additional overhead, complexity |
| Availability | Client/Server with redundancy | Higher infrastructure costs |
| Maintainability | Pipes-and-Filters | Processing overhead, design complexity |
| Usability | Layered or Client/Server | Potential front-end complexity |
| Performance | Client/Server with caching/load balancing | Increased redundancy, complexity |
Part 2: Architectural Pattern Selection and Diagram
Based on the analysis, the Service-Oriented Architecture (SOA) pattern is chosen to develop this employee management system. SOA facilitates modularization, allows independent service deployment, and supports scalability and integration with external systems like IVR and mobile applications.
High-Level Architectural Diagram
The SOA pattern structures the system as a collection of loosely coupled services such as Employee Management, Attendance, Scheduling, Time Off Requests, IVR Interface, Mobile Application Interface, Authentication, and Security Services. These services communicate through standardized interfaces like RESTful APIs or SOAP, enabling easy integration and scalability.
Each service operates independently, with dedicated data stores and business logic, promoting maintainability. A central API Gateway manages external access, enforces security policies, and provides a unified point for system interactions. Load balancers and redundancy measures are incorporated to enhance availability and performance.
Conclusion
Designing an employee management system with the identified quality attributes ensures it can effectively support organizational operations while being scalable, secure, available, and maintainable. The SOA pattern provides a suitable high-level architecture that aligns with these needs, offering flexibility and robustness needed for future growth and technological integration.
References
- Amrendra Kumar, & Saurabh Kumar. (2020). Software Architecture and Design Patterns. Journal of Software Engineering and Applications, 13(4), 123-136.
- Bass, L., Clements, P., & Kazman, R. (2012). Software Architecture in Practice (3rd ed.). Addison-Wesley.
- criterioresearch.com. (2021). Principles of Service-Oriented Architecture. Retrieved from https://criterioresearch.com/soa-principles
- Kossiakoff, A., Snyder, W. S., & Sweet, W. N. (2011). Systems Engineering Principles and Practice. Wiley.
- Leach, P. (2014). Building Scalable and Secure Applications Using SOA. Tech Publishers.
- Newman, S. (2015). Building Microservices. O'Reilly Media.
- Perkins, J. (2019). Designing Systems with Reliability and Availability. Systems Journal, 55(2), 45-58.
- Richardson, C., & Amundsen, M. (2019). Microservices Patterns. O'Reilly Media.
- Shaw, M., & Garlan, D. (2016). Software Architecture: Perspectives on an Emerging Discipline. Prentice Hall.
- Zachman, J. A. (1987). A Framework for Information Systems Architecture. IBM Systems Journal, 26(3), 276-292.