XML (eXtensible Markup Language) is a commonly used feed format providing structured data across various applications and feed channels.
Whether for data feed interchange between systems, configuration files, or document storage, XML provides a flexible and readable way to represent information. However, with this flexibility comes the need for validation to ensure that XML data is structured and formatted correctly.
In this blog post, we'll explore what XML validation is, why it’s essential, and how our platform handles it for you automatically.
What is XML Validation?
XML validation is the process of verifying that an XML document/feed conforms to a predefined structure, set of rules, or schema. The validation process ensures that the XML feed is both well-formed and valid:
- Well-formed XML: A well-formed XML feed adheres to the basic syntax rules of XML. This includes properly nested elements, matching opening and closing tags, correct use of attributes, use of non-reserved characters inside node names and its attributes, and a single root element.
- Valid XML: A valid XML document goes a step further by conforming to a specific schema or Document Type Definition (DTD). The schema defines the structure, element types, data types, and relationships within the XML document.
Common XML validation methods include using DTDs (Document Type Definitions), XML Schema (XSD), or RELAX NG. These provide the rules that an XML document must follow to be considered valid.
Why XML Needs to be Validated?
- Data Integrity and Accuracy
One of the most critical reasons for XML validation is to ensure data integrity. By validating XML against a schema, you can guarantee that the data adheres to the expected format and structure. For instance, if your XML document is expected to include a date in a specific format, validation ensures that any data outside of this format is flagged as incorrect. This prevents errors from propagating through your system and ensures that the data you work with is accurate and consistent. - Error Prevention
Validation helps catch errors early in the data processing pipeline. Without validation, malformed XML can cause downstream issues, such as application crashes, data corruption, or failed data exchanges between systems. For example, if your XML feed is used to provide product details to your partners, an invalid configuration or a character could lead to unexpected behavior, system failures, or a lack of updates on the receiving side. By validating XML, you can prevent such issues before they become critical. - Interoperability
XML is often used as a medium for data exchange between different systems or applications. When multiple systems rely on the same XML structure, the data must adhere to a common standard. Validation ensures that the XML document meets these standards, enabling smooth communication between systems. Without validation, you risk incompatibility issues, leading to failed integrations.
How Do We Do It?
Now, for the best part—at Feedoptimise, XML validation is automatically handled for you. Every time we sync your XML feed, we run it through the XML validation process, ensuring that your XML feeds remain valid at all times. Whenever you make changes to your mapping or add new items to your website, which then flow to your XML feed, we validate it for you.
In case of an issue, our feed management platform promptly notify you and continue using a backup version of your valid XML feed from the most recent successful run. This ensures that your partners receive a valid and stable XML file, even while the underlying issue is being checked and resolved.