What is Web SQL?

Web SQL is simply SQL database that you can run in the web. It is only supported in the latest version of Safari, Chrome and Opera. Web SQL database API  are used to work with client based databases. It is well suited for web applications.

The core methods are:

openDatabase
transaction
executeSql

openDatabase create a database aobject allows you to open an existing database or allows you to create a new one.

transaction allows you control transaction helping you to commit or rollback.

executeSql allows you to execute a Sql queries.

Firefox and Microsoft Edge does not support Web SQL since it is not going to be a W3C standard. However, Web SQL are wrappers for SQLite.

What is Web RTC?

WebRTC is still evolving although it has already made a big presence.

WebRTC stands for Web-based Real-Time Communications. It is free and the WebRTC project provides mobile applications and browsers to have communication capabilities using simple Application Programming Interfaces (APIs).  Since voice and video are involved it is complicated because of various standards it has to contend with.

WebRTC is supported by Google, Mozilla, Opera and others. Microsoft is not in the list having differences over some of the details such as Google's VP8 video codec to become the default.

Microsoft has its own web based communication which is called CU-RTC-WEB. Microsoft acquired Skype which has browser-based version of voice and video calling application and it is in Microsoft's interest to stay with evolving WebRTC.

The key resource is WebRTC.org.

Here are the components of WebRTC, a screen shot from the WebRTC site.

If you are interested in the under-the-hood details of WebRTC go here (http://www.webrtc.org/reference/webrtc-components).

Here is video of browser based communication between Mozilla and Chrome.

Read more on how the technology is evolving;
http://www.pcworld.com/article/2849392/does-skype-for-web-mean-webrtc-is-ready-for-prime-time.html

Do you know what browser you are using in your smart phone?

You don't like your smart phone browser. Find it and change it (you can change it for only iPhone and perhaps Androids).

Open your browser and type-in the following:
http://www.whatbrowser.org and you will get your answer as I got on mine (Android) Windows Phone 8.1 (I have to double check if this is true).

You can of course change it. Unfortunately none of these can be chosen as they appear to be not available for Windows Phone from windows store.

Here is the correct and complete answer: Go to WhatIsMyBrowser.com on Windows Phone.

 Few more comments added here.