A histogram is a chart that shows frequencies for equal width intervals of values of a metric variable. A company wants to know how monthly salaries are distributed over 1,110 employees having operational, middle or higher management level jobs. The screenshot below shows what their raw data look like.
The snowflake schema is a variation of the star schema, featuring normalization of dimension tables. In computing, a snowflake schema is a logical arrangement of tables in a multidimensional database such that the entity relationship diagram resembles a snowflake shape. The snowflake schema is represented by centralized fact tables which are connected to multiple dimensions..
Snowflakes are well known for symbolizing uniqueness as no two snowflakes are exactly alike. This is because the conditions under which snowflakes are formed are so uniqâ¦ue in each second that they fall that it is virtually impossible that two snowflakes will form in the exact same way.