Altibase is an enterprise grade, high performance and relational open source database, headquartered in Seoul, South Korea and New York, in the U.S.A. Altibase scales vertically and horizontally via auto-extend in-memory tables and sharding, respectively.The company was founded in 1999 and has offices in South Korea, United States, and China.Altibase went open source in February, 2018.Altibase is enterprise grade. Since 1999, Altibase has served over 650 enterprise clients including 9 Fortune Global 500 companies. Its major clients include Samsung, HP, AT&T, Hyundai, China Mobile, China Telecom, China Unicom, E*TRADE, Toshiba Medical and various world-renowned finance companies. Altibase has been deployed in over 6000 use cases in industries ranging from telecommunications, finance, manufacturing, and public service.Altibase is an in-memory database. Since 1999, Altibase has pioneered the in-memory database space. Altibase has helped its clients with high performing database technologies that are mandatory for extremely demanding use cases such as billing and authentication for mega telecom companies and other applications for manufacturing and finance companies with very high throughput requirements.Altibase is a hybrid database. Altibase was the first company in the world to develop and commercialize a hybrid database back in 2005. Altibase's hybrid architecture allows for utilization of memory tables for high performance and disk tables for economical storage in a single unified engine. As a result, data can be stored and manipulated in main memory alone, on physical disk alone or a combination of both. Consequently, Altibase eliminates the need to purchase an in-memory database and an on-disk database separately.Altibase is relational and ACID and SQL compliant. Thus, Altibase can replace or interoperate with Oracle and other legacy databases. In addition, migration from other legacy databases to Altibase is exponentially less complex.