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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A word processor is a computer program or device that provides for input, editing, formatting and output of text, often with additional features.
Answer:
Hi!
The correct answer is one data field and two links fields.
Explanation:
The node of a doubly-linked list contains one data field, and two links fields that references to the next node on the list and another one link field that references to the previous node in the sequence of nodes).
Answer: wiriting it and printing it
Explanation: duh
A <span>cripple stud is what is use for windows and doors
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