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Overview of Oracle group, analytical and hierarchical queries
Training to exam Oracle Database 19c: Program with PL/SQL 1Z0-149. Part 1.
Added overview about group, analytical, and hierarchical queries
Типовые ситуации в работе с ячейками и диапазонами. Concepts. Cells and Ranges. (RU)
Training to exam Oracle Database SQL 1Z0-071. Part 1.
Overview of Oracle architecture and performance tuning. Part 1.
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Training to exam Oracle Database SQL 1Z0-071. Part 2.
New overview about Oracle architecture and performance tuning. Part1.