Sap Se

Sap Ag

Chang Bin Song

Juchang Lee

Sang Kyun Cha

Yong Sik Kwon

Yongsik Yoon

Chanho Jeong

A hybrid database table is stored as both a row and a column store. One or more techniques may be employed alone or in combination to enhance performance of the hybrid table by regulating access to, and/or the size of, the processing-intensive column store data. For example during an insert operation, the column store data may be searched for a uniqueness violation only after certain filtering and/or boundary conditions have been considered. In another technique, a hybrid table manager may control movement of data to the column store based upon considerations such as frequency of access, or underlying business logic. In still another technique, querying of the hybrid table may result in a search of the column store data only after an initial search of row store data fails to return a result.

Growing community of inventors

Seocho-ku, South Korea

Chang Bin Song