Below is a normal heart sound recorded from a 1 year old boy with no heart disease. A fast heart rate is common in children and in normal subjects following a period of physical activity: If you have difficulty identifying systole (the interval between S1 and S2) use the second hand to feel the pulse at the neck.
Definition of the noun Subtype. What does Subtype mean as a name of something? noun - plural: subtypes. A group of specific things within a larger, more general group. [computing] The data type represented by a subclass. Definition of the verb Subtype. What does Subtype mean as a doing word? verb. To categorise as a subtype. synonym: subclassify; Explanation
The subtypes will have the same primary key as their supertype. Similarly, the only relationships (or associative objects) that are explicitly shown as connected to subtypes are the ones that haven't been shown already as being connected to (and ``inherited from'') the supertype.