The computing subject in HND contains a significant unit 21 application program interface that has a great focus on the essential fundamentals for integration and communication between the various platforms and components of software. This unit provides an introduction to the students regarding the API concept, explanation of significant types and purpose in modern development of software. APIs also have a great definition for the protocols and rules that permit them for various applications and components within systems to exchange functionality and data efficiently. It makes them critical for interoperable and scalable software solution building.
This unit assesses the learners to learn about the various categories of API that include Web API, system APIs and APIs database. Moreover, the weather which they are serving as our profound role in interaction facilities between the elements of software. This is critical for designing, implementing and creating processes of API with a focus on appropriate practices such as maintainability, usability and security. This unit will also identify the patterns of API design and provide encouragement for selecting and researching accurate APIs for the particular scenarios of the application. It assesses them to integrate into the project to improve the connectivity and functionality.
This development of practical skills in unit 21 includes debugging and testing of the API, utilising the tools of industry standards. With the help of API process integration documentation and effectiveness reflection on the selected API in meeting the requirements of the application. Learners would also increase their potential for critical evaluation of API implementation. In addition, they will recognise the significance of coding standards and rules for the API in complex support systems. These potentials make graduates prepare for the software development roles, design of applications and system integration, where the knowledge of API is increasingly vital.
The Aims of this Unit
The significant aims of Unit 21, application program interface, are demonstrated here in accordance with the HND Computing.
- To generate a comprehensive recognition of the way in which APIs serve their purpose and the multiple categories utilised in their development of software.
- To equip learners with the skills to implement, create and design APIs for communication facilitation between components of various software.
- To make learners appropriate for selecting, integrating and searching appropriate APIs into the application of software for improving interoperability and functionality.
- To provide the potential for debugging and testing APIs utilising the tools of industry standard and techniques that certify reliable and robust integration.
- To introduce appropriate practices in the designing of API, which include maintainability, usability and security considerations for the development of professional software.
- To motivate reflection and critical evaluation on the API effectiveness utilised with the application, which emphasised user requirements and design quality.
- To prepare students for the software development roles and integration of systems by generating practical competencies in documentation and API usage.
Learning Outcomes
Unit 21, application program interface, caters to all the main goals which are designed in the learning outcomes of it, such as,
LO1: Examine the role of an API and its suitability for a given scenario.
- APIs use and principles:
- Existing API search, requirements and role for an API.
- Categories identification of API uses, for example, advice manipulation, social media and visual.
- Identify the suitable use of API in the applications, for example, desktop, mobile, web, for a particular scenario.
- Examine the issues of security for the API, for example, inadequate authorisation and authentication, and inefficient coding.
LO2: Design a solution that extends an existing application using relevant APIs for a given scenario.
- API designs:
- Identify an existing application and assess the way through which it can be extended, for example addition of integration in social media, connecting the payment handling and web store, stock levels or integration of stock control with web stores, a relative layout for the multiple platforms.
- Development of relevant diagrams with wireframes, concept of application design.
- Consider the purpose or design of the application.
- Concert at Target platform, for example, desktop, mobile or web. Identify the application scope.
- Justified the Purpose or relevance or selection for the selection APIs for the application.
- Take the API security into consideration.
LO3: Implement an application in a suitable development environment based on a designed solution.
- Optimise the accurate techniques and tools for the development of the API solution:
- Select the appropriate process of implementation to recognise the stages included in the API development.
- Consider the suitable environment development optimisation
- Utilise the features and tools available in an environment with development rates for code development and API integration.
- Utilise the appropriate practices for API implementation.
LO4: Test an API developed for a given scenario to determine security vulnerabilities.
- Evaluation and testing:
- Document the process of testing that is carried out for design safety purposes or requirements of the application.
- Applied techniques of structural testing.
- Apply the techniques of common testing of function to derive test cases and test conditions, for example, boundary analysis of value, equivalence partitioning, testing decision table and testing state transition.
- Reflection of process in application development, which includes identification of selected strengths in API, safety concerns, weaknesses, feature accessibility with it and ease of use.
Assessment Criteria
The learning outcomes of unit 21, application program interface, contain the assessment criteria for further recognition of learners.
LO1: Examine the role of an API and its suitability for a given scenario.
- 1.1 Examine the relationship between an API and a software development kit (SDK).
- 1.2 Review a range of APIs for different platforms.
- 1.3 Assess a range of APIs that cover a variety of uses, suitable for a given scenario.
- 1.4 Evaluate a selected API for a given scenario, including potential security issues.
LO2: Design a solution that extends an existing application using relevant APIs for a given scenario.
- 2.1 Investigate an existing application that could be extended with a suitable API.
- 2.2 Design a solution that extends the existing application using an API for a given purpose.
- 2.3 Critically review the designed solution to inform improvements, including utilising a range of APIs.
LO3: Implement an application in a suitable development environment based on a designed solution.
- 3.1 Build on an existing application framework to implement an API.
- 3.2 Refine an application framework, utilising multiple APIs based on a designed solution.
- 3.3 Evaluate the APIs used in the application developed, based on the test results, including a data security report of the application.
LO4: Test an API developed for a given scenario to determine security vulnerabilities.
- 4.1 Conduct structural and functional testing of the application, recording the results.
- 4.2 Refine the application based on the results of testing.
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