Answer:
Smart system
Explanation:
Smart System is a computer-based network that triggers actions by sensing changes in the real or digital world.
Answer:
I was actually just looking to help with someone's schoolwork. . .
Explanation:
he will need a microphone, it is a recording device.
Answer:
A primary key is a special relational database table column (or combination of columns) designated to uniquely identify each table record. A primary key is used as a unique identifier to quickly parse data within the table. A table cannot have more than one primary key.
Primary Key.
Candidate Key.
Alternate Key.
Super Key.
Composite Key.
Foreign Key.
Unique Key.
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. Informally, a primary key is "which attributes identify a record," and in simple cases constitute a single attribute: a unique ID.
Explanation:
