Understanding PL/SQL Collections: Index‑by Tables, Nested Tables, and VARRAYs

This article explains Oracle PL/SQL collection types—index‑by tables, nested tables, and VARRAYs—detailing their definitions, initialization rules, element access, practical code examples, and the built‑in methods available for manipulating these collections.

CollectionsIndex-by TableNested Table

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Understanding PL/SQL Collections: Index‑by Tables, Nested Tables, and VARRAYs