datannur is based on 8 main concepts, divided into two categories:

A dataset represents a data table, whether it is a database or a file (Excel, CSV, etc.), organized in tabular form. This table consists of rows, corresponding to individuals or observations, and columns, which are variables or attributes. Each variable contains a list of values that differ from one individual to another.

Some variables are categorical, with possible values defined by an enumeration. A variable can be linked to multiple enumerations, and vice versa. It can also be associated with a business glossary concept to specify the exact meaning of the measured notion. Each variable can also have associated frequency data.

Frequencies allow counting the number of occurrences of each specific value within a variable. This provides a statistical view of data distribution and helps identify the most common or rare values. Each frequency entry contains a value and its number of occurrences.
An enumeration groups a set of possible values for one or more categorical variables. Each value can be accompanied by a description to clarify its meaning.

Datasets and enumerations can be organized into folders. Folders can be nested within each other, forming a hierarchical tree structure to organize your data.

A folder or dataset can be associated with two types of roles embodied by an organization:
Organizations can also be organized hierarchically, being contained within each other.

Keywords are used to enrich organizations, folders, datasets, variables, or concepts with cross-cutting themes or categories. A keyword can be linked to multiple elements and can also be organized hierarchically.

Business glossary concepts are used to precisely define certain notions used in the data. Unlike keywords, they do not classify by theme: they describe an explicit business meaning. A concept can be organized hierarchically, be linked to multiple variables, and be enriched by keywords or docs.

Documentation (docs) in Markdown or PDF format can be associated with organizations, folders, keywords, concepts, or datasets. They allow detailed description or explanation of these elements.

datannur concepts are interconnected, offering great flexibility to organize, enrich, and document your data. Here is how they are connected:
