A | B |
UID | unique Identifier |
simpleUID | a UID that is a single attribute |
composite UID | a UID that is a combination of attributes |
artificial UID | a UID that does not occur in the natural world but is created for identification purposes in a system |
candidate UID | a UID that identifies a person |
primary UID | a candidate UID that is the primary identifier of a person |
secondary UID | a candidate UID that also identifies a person, but is not the primary |
first normal form | eliminates repeating groups by putting each into a seperate table and connecting them with a 1:M relationship |
normalization | a series of steps followed to obtain a database design that allows for efficient access and storage of data in a relational database |
second normal form | the output of thesecond step of database normilization |
third normal form | the form of database normaliztion where all non key fields are dependent on the key. No none UID attributes can be dependent on another non UID attribute. |
transitive dependency | a condition that exist when any attribute in an entity is dependent upon another non UID attribute in that entity |