Can we create a list of good examples for choosing different programming languages?

Question

Examples
SQL is good for creating tables of data which can be crossreferenced with other tables
Databases

Thus storing lists of customers in a table
Then lists of products
Then combining the two to see who buys what

Edit - 2 more examples

Java - platform independent server side application

C# - used in Unity Game Engine

Answer 1

Java. Java is top pick as one of the most popular programming languages, used for building server-side applications to video games and mobile apps.

Answer 2

I believe Ruby is used to create extensions for the 3D modelling program SketchUp

Answer 3

C# is used in the game development engine Unity