DECLARE TYPE sum_multiples IS TABLE OF PLS_INTEGER INDEX BY PLS_INTEGER; n PLS_INTEGER := 5; -- …Traversing an array means to iterate it starting from the first index till the last element of the array. document.write( Object.keys(myObject) ); Each key is user-defined and users can prefer the way to declare the keys. Example: Associative Array Or Index-by Tables. An Associative array is a set of key-value pairs and dynamic objects which the user modifies as needed. This function is explained in function reference. © 2020 - EDUCBA. A hash is a way of associating one set of values ("keys") with another set of values ("values"); forming a set of key-value pairs. The Associative Array. 1. ksort(): performs a sort on associative array according to … This example uses an array, and it is worth noting that it is a very inefficient implementation.