Data in column store tables is separated into individual columns to support high performance on queries and also for better memory management. However, it is also possible to subdivide the rows of column tables into separate blocks of data. We call this table partitioning. If column separation is vertical subdivision, think of table partitioning as horizontal subdivision.
Generating partitions is usually the responsibility of the SAP HANA Cloud administrator. There are many decisions to be made relating to partitions including the type of partition. For example, hash, round robin, or range. Partitions can also include sub-partitions. The administrator uses monitoring tools to observe the performance of partitions and makes adjustments. What the modeler will need to do is to provide the information relating to the use of the data - for example, how queries will access the data so that the partitions can be defined optimally.