Stomach cancer is staged according to where the cancers found and how far it has invaded the stomach tissue, or if it has spread beyond the stomach and into other organs (stages 0 to IV). The treatment of stomach cancer depends on the size and location of the tumor, the stage of the disease and the patient's general health.
The star schema gets its name from the physical model's resemblance to a star shape with a fact table at its center and the dimension tables surrounding it representing the star's points.
Note that the scripts and table descriptions for these two schemas are in section HR Schema and OE Schema, respectively. Figure 4-2, PM Schema illustrates the PM schema. Note that the scripts and table description for the PM schema are at PM Schema. Figure 4-3, SH Schema illustrates the SH schema. Note that the scripts and table description for the SH schema are in section SH Schema. This edition of the book does not illustrate the IX schema, but its scripts and table description are in section IX Schema.