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    PL SQL Interview Questions

    PL (Procedural language) is an extension to SQL (Structured Query Language) where a developer can write complex database interactions using procedures, control structures like branching and iteration, modules and functions. It has tight integration with SQL and supports both dynamic and static SQL.

    Amongst other questions during an interview, it is also important to know how SQL and PL/SQL are different. Some benefits of PL/SQL over SQL are –

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    JavaScript Map

    A Map is a collection of elements in JavaScript in which each element is stored as a KV (key, value) pair. It is possible for a JS Map object to hold both objects and primitive values as either the key or the value. Elements in a Map object are iterated in insertion order.

    When iterating over the Map object, a key, value pair is returned in the same order as it was inserted i.e. it remembers the original insertion order. The general syntax of creating a JavaScript Map object is:

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