Explanation:
Both Primary Key and Candidate Key are the attributes that are used to access tuples from a table. These (Primary key and Candidate key) are also can be used to create a relationship between two tables.
- A Candidate Key can be any column or a combination of columns that can qualify as a unique key in the database. Each Candidate Key can qualify as a Primary Key.
- A Primary Key is a column or a combination of columns that uniquely identify a record. The primary key is a minimal super key, so there is one and only one primary key in any relationship.
<em> The main difference between them is that a primary key is unique but there can be many candidate keys. </em>
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For testing the designs of the product prior to putting it into production, mechanics should be responsible for the same.
The information related to the mechanics engineers is as follows:
- They are responsible for manufacturing & designing of machines & products.
- It is the engineering branch.
- Moreover, they are fully responsible for developing things.
Thus we can say that for testing the designs of the product prior to putting it into production, mechanics should be responsible for the same.
Learn more related to the production here: brainly.com/question/22852400
Answer:
Provide the basic interface for the hardware.
Explanation:
