Merge pull request #174 from gimantha/main

Change the position of navigation link for data mapper usecases

Author: anupama-pathirage

en/docs/integration-guides/usecases/datamapper/overview.md

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+# Data Mapper Use Cases
+
+The Data Mapper in WSO2 Integrator: BI enables you to visually transform data between formats, such as JSON, XML, and CSV, using an intuitive, low-code interface.  
+This section provides a collection of end-to-end transformation examples that demonstrate practical, real-world integrations across various formats.
+
+---
+
+## What you’ll learn
+
+Each use case in this section helps you understand how to:
+
+- Design input and output types in the Type Editor.
+- Use inline or reusable Data Mappers.
+- Apply mappings, aggregations, and expressions to manipulate data visually.
+- Integrate transformations into automation or other integration flows.
+
+---
+
+## Available use cases
+
+| Use Case                                                                                | Description |
+|-----------------------------------------------------------------------------------------|--------------|
+| [Read CSV File and Transform to XML File](read-csv-file-and-transform-to-xml-file.md) | Demonstrates how to read a CSV file, map it to a structured `Orders` record, and convert it into XML output using an inline Data Mapper. |
+| *Coming soon:* JSON to XML                                                              | Shows how to convert a nested JSON structure into XML with namespaces and attributes using the Data Mapper. |
+| *Coming soon:* XML to JSON                                                              | Illustrates how to map XML elements into a simplified JSON representation. |
+| *Coming soon:* CSV to JSON                                                              | Walks through mapping tabular data from a CSV file into structured JSON objects. |
+
+---
+
+## When to use data mapper
+
+Use the Data Mapper when you need to:
+
+- Transform data between different payload formats (CSV, JSON, XML).
+- Build file processing or ETL-style integrations.
+- Create API payload transformations between client-facing and backend schemas.
+- Minimize manual code and maintain readable, visual mappings.
+
+---
+
+## Related topics
+
+- [Data Mapping Quick Start](../../../developer-guides/data-mapping.md)
+- [Design the Integrations](../../../developer-guides/design-the-integrations.md)
+- [Create a Project](../../../developer-guides/create-a-project.md)
+
+---