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Yejoong (Paul) Kim

2 posts •
System Design

PostgreSQL in System Design

This article aims to give a brief overview of the PostgreSQL relational database management system, provide some brief comparisons to other alternatives, such as MySQL, illustrate useful features in PostgreSQL and discuss certain systems in which PostgreSQL proves more useful.

Yejoong (Paul) Kim
Java

NullPointerException in Java

Any developer beginning their Java programming journey will inevitably come across a certain error: the NullPointerException. The NullPointerException is one of the most common errors encountered by beginner programmers when dealing with objects in Java.

Yejoong (Paul) Kim
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