Ioana Delaney, Senior Software Engineer at IBM

Ioana Delaney

Senior Software Engineer, IBM

Ioana Delaney is a Senior Software Engineer in Silicon Valley Laboratory in San Jose, California. She was part of the DB2 for LUW development team until she recently joined Spark Technology Center at IBM. She worked in many areas of SQL query compilation, including query semantics, query rewrite, query optimization, and federated/distributed compiler.


Informational Referential Integrity Constraints Support in Apache Spark

An informational, or statistical, constraint is a constraint such as a unique, primary key, foreign key, or check constraint that can be used by Apache Spark to improve query performance. Informational constraints are not enforced… Read more