The situation is improving in China

PostgreSQL implements several types of indexes, such as btree, hash, gist, spgist. The default and most common type of index is btree. A btree (balanced tree) allows for easier and faster searching. This can be seen in the image above where we search for the key with the value of 53. 

Btree...

The areas where you are struggling to explain the points in simple terms or forget something important are where you have some gaps in your understanding.

Now that you know your gaps, go back to the source material. Look up definitions. Augment with other sources. When you ...

While motivation is a huge topic, and the science on it is not in agreement, there are many takeaways we can use to understand how motivation operates and use it to improve our lives.

• Rewards and punishments are at the centre of motivation. For example, we may not b...