Patent ID: 11880371
Assignee: SAP SE
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A system comprising:
at least one programmable processor;
at least one memory including program code which when executed causes operations comprising:
receiving query for data stored in a database, wherein the database stores the data in accordance with a multi-level storage structure that includes a first level storage structure, a second level storage structure, and a main store, wherein the first level storage structure is configured to store at least a first data in a write-optimized logical row store, wherein the second level storage structure is configured to store at least a second data in a column store, and wherein the main store is configured to store at least a third data in a corresponding column store; and
in order to respond to the query, performing a look-up for the data in the multi-level storage structure, the look-up performed first at the first level storage structure, and if the data is not found at the first level storage structure, the look-up for the data is performed at the second level storage structure, and if the data is not found at the second level storage structure, the look-up for the data is performed at the main store.