A composite primary key<span> is a set of several primary </span>keys<span> that, together, uniquely identifies each record.</span>
Primary keys are used as identifiers of composite entities. In this case each primary key combination is allowed only once in the *:* relationship.
Other case where primary keys are used is as identifiers of weak entities, where the weak entity has a strong identifying relationship with the parent entity.
Answer:
u would look for the roster that has the first letter of your last name
Answer: I believe this would be A.) choosing an alternative
Explanation:
To find meaning and decipher relationships between symbols and information
Talking books could be a means to automatize and generalize such an audio–visual reading experience. ... RWL consists of an experimental reading situation where one reads a text while one can hear it said aloud by a pre-recorded speaker or by a text-to-speech system.
