What stage is the most inner part of the web architecture where data such as, customer names, addresses, account numbers, and credit card info, is stored

Database

Explanation:

A website or web application is a page or a collection of pages addressing the same information on the internet. Web pages and the whole web application is made by a web developer using tools like HTML, CSS, Javascript, Flask, react.js, etc.

All websites or applications require a fast, flexible but secure source of storage to hold information. This storage is called a database. Examples of databases are relational and non-relational databases.

answers

a. nitrogen (n)

d. oxygen (o)

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