Unit 9.4. PL/SQL Tables
PL/SQL tables are Oracle’s version of an array. You can think of an array as a list, similar to an Excel worksheet with only two columns. In the same way you refer to a cell in the Excel worksheet by its column letter and row number, each element of a PL/SQL table is referenced by its index number. In this chapter, you review how to make use of PL/SQL tables.
PL/SQL Table Basics
PL/SQL tables are PL/SQL’s way of providing arrays. Arrays are like temporary tables in memory and thus are processed very quickly. It is important for you to realize they are not database tables, and DML statements cannot be issued against a PL/SQL table. This type of table is indexed by a binary integer counter (it cannot be indexed by another ...
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