Questions regarding concepts of GIS, database, & Programming:
(1) What is projection and geographic coordination vs projected coordination system?
(2) What's a foreign key in the database?
(3) Difference between Null & 0?
(4) Difference between an interface & abstract class?
(5) What's "this" keyword in OOP?
(6) Difference between function overloading and overriding?
(7) Difference between HTML & HTML5?
(8) Three main ways to apply CSS styles to a web page?
(9) Difference between Pass by value & pass by reference?
(10) Difference between raster, vector data?
(11) What's variable hoisting in JavaScript?
(12) What's SQL join?

Question

Questions regarding concepts of GIS, database, & Programming:
(1) What is projection and geographic coordination vs projected coordination system? 
(2) What's a foreign key in the database?
(3) Difference between Null & 0?
(4) Difference between an interface & abstract class?
(5) What's "this" keyword in OOP?
(6) Difference between function overloading and overriding?
(7) Difference between HTML & HTML5?
(8) Three main ways to apply CSS styles to a web page?
(9) Difference between Pass by value & pass by reference?
(10) Difference between raster, vector data?
(11) What's variable hoisting in JavaScript?
(12) What's SQL join?

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