Plamen is founder of Tangra, specializing in relational database applications analysis, implementation, and tuning. His particular interest is in design patterns, performance and optimization. He has enjoyed building solutions for UNIX, DOS and Windows platforms, with main focus on SQL Server since version 4.21. Plamen is an MVP for SQL Server and has master's degree in computer science with specialization in algorithms and compliers. His certifications include MCSE, MCSD/.NET, MCDBA, MCSA, MCAD.NET, and MCITP.