Parts of a Computer. Computers are tools that can help you communicate, research, and create. In this movie, youâll learn about the parts of your laptop or desktop computer. Youâll explore different computer hardware that helps you input information, such as the keyboard, mouse, or scanner.
The snowflake schema is similar to the star schema. However, in the snowflake schema, dimensions are normalized into multiple related tables, whereas the star schema's dimensions are denormalized with each dimension represented by a single table.
The snowflake is an very simple example of self-assembly. There is no blueprint or genetic code that guides the growth of a snowflake, yet marvelously complex structures appear, quite literally out of thin air. As we understand better how snowflakes form, we learn about self-assembly.