Butterflies and moths have large eyes and one pair of antennae. Butterfly antennae are thin with a thick section at the tip. Moth antennae are thin all the way to the end, or have lots of side branches so they look like feathers. Other Physical Features.
How is Plasminogen Kringle 5 abbreviated? PK5 stands for Plasminogen Kringle 5. PK5 is defined as Plasminogen Kringle 5 very rarely.
Even a default user of some sort would have a name! Primary Key not allowing NULL values is as per the ANSI SQL standard and as per DBMS concepts and rules. 1. A PK only allows unique values just like a Unique key does, but PK does not allow NULL values and UK does. 2. And you can create only 1 PK, and multiple UK.