Generating hash values

US9817858B2 · kind B2 · utility

Assignee

• SAP SE · DE

Inventors

• Katrin Eisenreich · Dresden, DE
• Holger Bischoff · Dielheim, DE

Key dates

• Filing date: Dec 10, 2014
• Grant date: Nov 14, 2017
• Expiry date: Dec 18, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F16/2365
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

The present disclosure involves systems, software, and computer implemented methods for generating a hash identifier. One example method includes: identifying a record to include in a table, the record associated with two or more primary key fields that are concatenated to create a concatenated key, wherein the table includes one or more hash columns for storing hash identifiers; applying a hash function to the concatenated key to create a new hash value; determining whether a record in the table has a hash value matching the new hash value; in response to determining that a hash value of a record matches the new hash value and the concatenated key of the identified record does not match the concatenated key of any existing record, adding a counter to the new hash value to generate a unique hash ID; and storing the record, including the unique hash ID, in the table.