Data Base guru
This included Stonebraker, who left Berkeley in 1982 to help found Ingres Corporation, which was later sold to ComputerAssociates and was recently re-established as an independent company in 2005. After the sale in 1994, Stonebraker returned to Berkeley. Upon his return he started a "post-ingres" effort to address the limitations of the relational model, naming the new project Postgres. Postgres offered a number of features that effectively made the database "understand" the data inside it, dramatically improving programmability. Postgres was also offered using a BSD-like license, and the code forms the basis of today's free software, PostgreSQL.
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