Roopesh RamklassRoopesh Ramklass, OCP, OCM, is Senior Data Architect with more than 15 years of experience in managing and executing IT development projects, including infrastructure systems provisioning, software development, and systems integration. He is te author or co-author of OCA Oracle Database 12c SQL Fundamentals I Exam Guide and OCA/OCP Oracle Database 12c All-in-One Exam Guide. Read More Read Less