Your S1000D  Partner in Aerospace, Defense, and beyond

Business Rules define how the S1000D specification is applied in a specific project or organization. Since S1000D is flexible, Business Rules restrict and standardize things like allowed element usage, content types, file naming, and applicability. They are typically documented in a Business Rules Decision Point (BRDP) and Business Rules Exchange (BREX) Data Module.

BREX (Business Rules Exchange) expertise involves understanding and creating BREX Data Modules that enforce project-specific rules. It requires knowledge of XML, the S1000D schema, and the ability to define constraints such as allowable elements, attribute values, and usage conditions. BREX experts also support validation and QA by ensuring authored content complies with these rules.

The DMRL is a structured list (often in XML or Excel) that defines which Data Modules (DMs) are required for a project or product. It includes metadata like DM codes (DMCs), titles, status, and responsible parties. The DMRL guides content planning, authoring, and completeness tracking.

• DMC (Data Module Code) is a unique identifier for each data module, encoding information like model, system, type, and sequence.
• PMC (Publication Module Code) identifies a publication composed of multiple DMs.
  Creating these involves using S1000D coding structures to ensure consistency, traceability, and interoperability.

Stylesheets (typically XSL-FO or XSLT) transform S1000D XML content into print-ready PDF documents. These control layout, fonts, formatting, pagination, and styles, converting modular XML into a cohesive, readable publication.

IETM (Interactive Electronic Technical Manual) stylesheets—usually XSLT + CSS/JS—convert XML into interactive HTML for use in web or tablet-based viewers. They enable features like search, navigation, hyperlinks, filtering, and multimedia, based on the structure and metadata in the S1000D content.

BREX Validation is the process of checking whether a Publication/Data Module complies with the business rules defined in the BREX DM. Tools perform this validation automatically by reading the BREX and comparing it against authored content, flagging any rule violations for correction before publishing.