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Course Outline
DAY 1 – XML, XQuery
- Presentation of course objectives
- Presentation of applications used
- Verification of the working environment
- Presentation of resources used during the course
Module 1: XML Fundamentals
- What is XML and its use cases
- Structure of an XML document
- Elements, attributes, and text
- Rules for well-formed documents (single root element, correctly closed tags
case sensitivity) - Difference between well-formed and valid documents (schema/DTD, briefly)
- Introduction to DTD and XML Schema
- XML Namespaces
- XPath
- navigating through the document
- Selecting elements
- Predicates
- Basic functions
Practical Activities:
- Reading a real XML file
- XPath expressions
- XML vs JSON
Module 2: XQuery
- What is XQuery and its relationship with XPath (XQuery "includes" XPath)
- Structure of an XQuery query: prolog + expression
- FLWOR expressions: `for`, `let`, `where`, `order by`, `return`
- Construction of new XML nodes directly within the query (data transformation)
- Common built-in functions: `count()`, `sum()`, `substring()`, `contains()`, data functions
- User-defined functions (`declare function`) – introduction only, without advanced
recursion - Queries across multiple documents (`doc()`, `collection()`) – introductory level
Practical activities:
- FLWOR query
- Data transformation
- Query with aggregation. (Recommended tool for exercises: BaseX (free, has a graphical interface, ideal for
training) – installation in advance or use of an online/demo version is recommended,
to avoid wasting time on configuration.)
Introduction to API
- General understanding of operating principles
DAY 2 – API, Postman and SoapUI
Module 3: API Fundamentals
- What is an API and why it is used (communication between applications/systems)
- Client-server concept
- REST API: basic principles (resources, URLs, statelessness)
- HTTP Methods: `GET`, `POST`, `PUT`, `DELETE` – what each represents
- Common HTTP response codes: 200, 201, 400, 401, 404, 500
- Structure of an API request: URL, headers, body, query parameters
- Data formats transported: XML vs JSON – direct comparison (same data, two
formats, side-by-side) - Authentication
- Basic Authentication
- API Key
- Bearer Token
- OAuth 2.0 (introduction)
Practical activities:
- Anatomy of an API request
- First API call
- From API to XQuery
- Case study
Module 4: API Tools – Postman
- Building a request: method (GET/POST/PUT/DELETE), headers, body, params
- Collections and Environments (useful for separating DEV/UAT/PROD at a bank)
- Environment variables — essential when authentication tokens or URLs differ
between environments
• Authentication: Bearer Token, OAuth 2.0, API Key
• Tests tab — simple JavaScript scripts for automatic response validation
• Collection Runner — automatic execution of a series of requests, useful for regression
testing - SoapUI usage
Practical activities:
- A basic request
- Environment and variables
- Automated assertions
- Simulating a banking scenario
Module 5: API Tools – SoapUI
- WSDL structure and how to import it into SoapUI for automatic request generation
- Structure of a SOAP request: Envelope, Header, Body
- Assertions in SoapUI: XPath, Schema Compliance, SOAP Fault
- Practical difference from REST API: SoapUI is contract-oriented (WSDL/XSD), Postman
is request-oriented
Practical activities:
- Import WSDL and first request
- Assertions
- Test Suite
Recap and Closing
- Review of main concepts
- Best practices for working with XML and APIs
- Resources for further study
- Questions and answers
- Feedback and course closure
Requirements
Target Audience
- Software developers and integration developers;
- QA engineers and testing specialists;
- Systems analysts and technical consultants;
- IT specialists involved in application integration and data exchange;
- Anyone interested in understanding XML technologies and how to use REST and SOAP APIs.
Prerequisites
- Basic knowledge of fundamental programming concepts;
- Experience working in a software development environment or technical setting;
- Basic programming experience using languages such as Java, C#, Python, JavaScript, or similar.
No prior knowledge of XML, XQuery, Postman, or SoapUI is required.
14 Hours
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