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PL/SQL offers these collection types: Although collections can have only one dimension, you can model multi-dimensional arrays by creating collections whose elements are also collections.
To use collections in an application, you define one or more PL/SQL types, then define variables of those types.
” In the print version of the article, only choice a was correct.Tables are made up of rows of data, each consisting of one or more columns, so it stands to reason that Oracle Database would make it as easy as possible to work with those rows of data inside a PL/SQL program.And it does precisely that through its implementation of the datatype, such as a number or string.Because only one exception can be raised at a time in a session, it doesn’t make any sense to allow you to check for two (or more) exceptions in a single handler.
For full explanations of both of these answers, visit plsqlchallenge.com, register or log in, and click the Closed/Taken tab in Play a Quiz.You can define collection types in a procedure, function, or package.