Jesper Lyngbye

Jesper Lyngbye

Jesper Lyngbye
More ideas from Jesper
Network Subnet Cheat Sheet | Subnet Mask Quick Reference Poster | All About Networking.

George Ou explains IP subnetting using his own graphical approach. It& a great primer for students and a nice refresher for others.

MySQL Join types

So many times I have been asked for help with a query, where the question really comes down to the understanding of the difference between INNER and LEFT or RIGHT JOINs. I created this poster a few years ago and…Read more ›

SQL

Sql Guide (Quickstudy: Computer) by Inc. laminated guide includes: ·overview of SQL ·databases ·delimiters/operators ·order of operations ·DDL ·DML .

Relational Database Design Examples | SQL Server Database Diagram Examples, Download ERD Schema, Oracle Data ...

Relational Database Design Examples | SQL Server Database Diagram Examples, Download ERD Schema, Oracle Data ...

So many times I have been asked for help with a query, where the questoin really comes down to the understanding of the difference between INNER and LEFT or RIGHT JOINs. I created this poster a few years ago and…Read more ›

So many times I have been asked for help with a query, where the questoin really comes down to the understanding of the difference between INNER and LEFT or RIGHT JOINs. I created this poster a few years ago and…Read more › Más