Following URLs can be used to write code and compile / run online:

http://www.tutorialspoint.com/codingground.htm
http://rextester.com
https://dotnetfiddle.net
http://sqlfiddle.com/
http://www.tutorialspoint.com
http://codingground.htm

helping material for students

Software Projects & Research section has developed some helping material for students regarding artifacts and important diagrams during documentation of their final project. The material includes the content from software engineering articles/books/handouts. For further elaboration, samples and examples are also provided wherever needed. Students are encouraged and advised to learn/explore the material that is very helpful specially during the documentation of the project and apply it in the final project.

MS Visio Stencils and Tutorial:
http://www.youtube.com/watch?v=w2hT8oo2iVo
http://www.softwarestencils.com/uml/index.html

Links for drawing UML diagrams online

Following are some online resource you can use to create different diagrams in the project

Sea Quail Database Diagram Tool (It will work in Chrome browser only)
https://chrome.google.com/webstore/detail/sea-quail-database-diagra/elkpialiknkiaebieojbgnhindepnlkg?hl=en

http://ondras.zarovi.cz/sql/demo/

http://www.dbschemaeditor.com/OnlineDB.aspx

http://creately.com/app/

https://www.lucidchart.com/pages/examples/uml_diagram_tool

http://www.gliffy.com/uses/uml-software/

http://yuml.me/edit/23db58a4

https://www.websequencediagrams.com/#