My Little World

2 intensive weeks for Data Modeling course at the end of my 3rd semester. So so tired now

Just search for an easy tool to draw model for homework 2 and found some as below:

1. yEd: free, java application (need to install Java VM first). It supports only few diagrams, but support user-defined shapes & diagrams

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1. Username Regular Expression Pattern:

^[a-z0-9_-]{3,15}$

2. Password Regular Expression Pattern:

((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%]).{6,20})