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:
Answer:
The most significant issue addressed while ensuring the proper functionality of computer is the working of Operating System.
Explanation:
There are many issues faced while making the computer properly functional. Such as, Memory size, processor speed, software installation etc. while operating system not working properly can cause a significant problem. If operating system is not working properly, the user is unable to use the computer.
So, to make sure the functioning of computer, the significant issue that should be needed to address is Operating System Installation.
The option that best explains the game is that a game can have multiple instances using the same class.
<h3>Can a class have multiple instances?</h3>
A game is one that can always create multiple instances of a class. This is known to be the reason that classes are made.
Conclusively, each object often has its own specific inner variables and they do not have only if they are static but games of multiple instances is the reason why there is only one class with the new characters.
Learn more about Games from
brainly.com/question/1786465
