Understanding Diagrams [closed]

Question

I want to learn about Design Patterns and everywhere I see diagrams like this:

Is it UML or something else? I just need a quick reference to learn what do each of different lines mean? which one is inheritance, etc..

Answer 1

1 Yes it is UML. You can read more (with examples) about class diagrams and other UML diagrams e.g. at http://www.uml-diagrams.org/class-diagrams-overview.html

2 Although it is possible to Google out and print and pin up on your notice board some "UML cheat sheet" or "UML quick reference card" (e.g. http://www.holub.com/goodies/uml).

3 it is much better to first read a good book so that you know what is/is_not possible what is the structural/behavioral modeling etc. Explaining UML is not a thing that can be done on 1 single sheet of paper or in one single Stack Overflow answer

Answer 2

I recommend you to read UML superstructure specification. Read Classes section to get information about types of relationship applicable to structural diagrams defined in UML, and much more. This document is base document if you want to learn UML. Dowload it from this site UML Superstructure

Answer 3

Yes, is U.M.L.

You do can learn about applying Design Patterns, without getting into U.M.L., but, the original book, as well as, a lot of documentation uses U.M.L.

I suggest to learn about U.M.L., without Design Patterns, and later, learn about Design Patterns, with & without U.M.L.

Just my 2 cents.

Answer 4

Here is a key that I found here

***EDIT @xmojmr's request, here is an updated diagram that I found here (detailed definitions can be found in the linked page):