Glossary

A collection of terms and their definitions

A

API (Application Programming Interface): Application Programming Interface –bridges that let different software systems talk to each other.

Cardinality: The number of elements in a set or other grouping, as a property of that grouping.
CDE (Critical Data Element): Critical Data Element
CDM (Common Domain Model): A standardised, machine-readable and machine-executable blueprint for how financial products are traded and managed across the transaction lifecycle. It is represented as a domain model and distributed in open source.
CSV (Comma-Separated Values): Comma-Separated Values. Simple file format used to store tabular data (like spreadsheets or databases) in plain text.

deep hash: A hash value computed from all attributes of an object, including every nested or encapsulated attribute, recursively. Instead of hashing only the top‑level fields, a deep hash covers the entire object structure and incorporates every value into the final hash.
deep path: A way to access a shared attribute across all options of a choice type, without needing to know which option is present.
DSL (Domain-Specific Language): A programming language for a narrow purpose e.g. for financial regulatory reporting.

E-notation (Exponential notation): Exponential notation is a shorthand way to write very large or very small numbers, representing them as a number multiplied by a power of 10, with the "E" standing for "times ten to the power of" (e.g. 2.5 times 10 to the power of 6 becomes 2.5E6).

FINOS (Fintech Open Source Foundation): A nonprofit organization that brings together the global financial services industry to collaboratively build open‑source software, standards, and best practices.
FpML (Financial Products Markup Language): Financial Products Markup Language

I/O (input/output): input/output
ISDA (International Swaps and Derivatives Association): The global trade association for participants in the derivatives markets.

JSON (JavaScript Object Notation): Text-based, language-independent format with key-value pairs (eg Name: Dave).

Recursion: A method of solving a computational problem where the solution depends on solutions to smaller instances of the same problem.
root type: A root type is the top level entity (parent) from which all other entities (child types) descend. It’s the entry point and highest node in a model’s structure and acts as a container that defines the scope of the dataset.
Rosetta: REGnosys’s proprietary platform for building and sharing financial models.
Rune DSL (Domain Specific Language): A Domain Specific Language for defining business rules, data structures, and calculations in financial and regulatory contexts. Used in Rosetta.

XML (Extensible Markup Language): Text-based format used to store and transport data in a structured way that both humans and machines can read.