Datamallissa

Datamallissa is a Finnish-language term used in information technology and data management to refer to being inside a data mall architecture. The word combines datamalli (data model) with the inessive suffix -ssa, meaning “in the data mall.” In practice, datamallissa denotes the state where data products, models, and access layers are organized according to a data-mall approach within a company’s data landscape.

The term is primarily found in Finnish enterprise contexts and is not standardized in international IT literature. When used, it usually describes environments where data are curated and organized around business domains to support analytics and decision-making. A data mall sits between a raw data lake and a formal data warehouse, aiming to combine agility with governance and structure.

Key characteristics include domain-oriented data models, a shared semantic layer, metadata and lineage, governed data access, and repeatable ETL/ELT processes. Data products such as subject-area datasets and analytic views are designed for analysts and business users.

Implementation considerations include governance, data quality, metadata management, and the trade-offs between data duplication and timeliness. The term is context-specific; in broader discussions it is related to data warehouse, data lake, data mart, and semantic layer.