Storage of database column data in non-volatile memory

US10761994B2 · kind B2 · utility

Assignee

• SAP SE · DE

Inventors

• Carsten Thiel · Heidelberg, DE
• Guenter Radestock · Karlsruhe, DE

Key dates

• Filing date: Nov 21, 2018
• Grant date: Sep 1, 2020
• Expiry date: Jan 18, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2212/7202
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A system in which first header data and a first logical array are stored in a volatile random access memory, the first logical array stored in a first contiguous memory block, with each array position of the first logical array representing a position in a database table and storing a value identifier of a value associated with the position in the database table, and with the first header data indicating a number of bits used to encode the value identifiers and comprising a first pointer to the first contiguous memory block. A memory size associated with the first header data and the first contiguous memory block is determined, a first memory block of the non-volatile random access memory is allocated based on the determined memory size, an address of the non-volatile random access memory associated with the allocated first memory block is determined, and the number of bits and a binary copy of the first contiguous memory block are written at the address of the non-volatile random access memory.