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.
A schema is a mental concept that informs a person about what to expect from a variety of experiences and situations. Schemas are developed based on information provided by life experiences and are then stored in memory. Our brains create and use schemas as a short cut to make future encounters with similar situations easier to navigate. We will look at a couple of examples that will help illustrate the definition.