DATA & CALCULATIONS
What is TM1 — and what is a TM1 database?
TM1 is the multidimensional in-memory database behind IBM Planning Analytics. “In-memory” means that data is held in RAM for processing. TM1 organises data in Cubes, with dimensions representing, for example, months, products, regions and measures.
A revenue value therefore belongs to more than just a row: it can be associated with a particular product, month and region. Calculation rules can define relationships such as Revenue = Sales volume × Price in the model.
A “TM1 model” includes not only cubes, but also dimensions, rules and processes for handling data.
Related guide: Create cubes →
Florian Kaiser