Database Management Systems (DBMS)
Which of the following best describes Foreign key?
Difficulty: Medium
About this MCQ
This Medium Database Management Systems (DBMS) MCQ checks one syllabus fact.
The question is: “Which of the following best describes Foreign key?”
The accepted answer is B. A column that creates a link between data in two tables by referencing a primary key in another table.. A column that creates a link between data in two tables by referencing a primary key in another table is the person body or term that satisfies Which of the following best describes Foreign key option B Option A A minimal set of attributes that can uniquely identify a record in a table does not match the stem it is a near-miss used to catch incomplete recall of A column that creates a link between data in two tables by referencing a primary key in another table Option C The process of intentionally introducing redundancy into a database to improve read performance does not match the stem it is a near-miss used to catch incomplete recall of A column that.
- A. A minimal set of attributes that can uniquely identify a record in a table.
Why not A: “A minimal set of attributes that can uniquely identify a record in a table.” is not correct. The accepted answer is B. A column that creates a link between data in two tables by referencing a primary key in another table.. A column that creates a link between data in two tables by referencing a primary key in another table is the person body or term that satisfies Which of the following best describe
- B. A column that creates a link between data in two tables by referencing a primary key in another table. ✓
- C. The process of intentionally introducing redundancy into a database to improve read performance.
Why not C: “The process of intentionally introducing redundancy into a database to improve read performance.” is not correct. The accepted answer is B. A column that creates a link between data in two tables by referencing a primary key in another table.. A column that creates a link between data in two tables by referencing a primary key in another table is the person body or term that satisfies Which of the following best describe
- D. A database structure that improves the speed of data retrieval operations on a table.
Why not D: “A database structure that improves the speed of data retrieval operations on a table.” is not correct. The accepted answer is B. A column that creates a link between data in two tables by referencing a primary key in another table.. A column that creates a link between data in two tables by referencing a primary key in another table is the person body or term that satisfies Which of the following best describe
Correct answer
B. A column that creates a link between data in two tables by referencing a primary key in another table.
Explanation
A column that creates a link between data in two tables by referencing a primary key in another table is the person body or term that satisfies Which of the following best describes Foreign key option B Option A A minimal set of attributes that can uniquely identify a record in a table does not match the stem it is a near-miss used to catch incomplete recall of A column that creates a link between data in two tables by referencing a primary key in another table Option C The process of intentionally introducing redundancy into a database to improve read performance does not match the stem it is a near-miss used to catch incomplete recall of A column that.
Source: Database Management Systems (DBMS) Official Reference Guide
Tags: computer science, dbms, SQL, databases
Submitted by: MCQsHub Editorial
Related MCQs
- What does Primary key refer to?
- Normalization is best defined as which of the following?
- Which term refers to a column or set of columns that uniquely identifies each row in a database table?
- A set of properties (Atomicity, Consistency, Isolation, Durability) that guarantee reliable database transacti...
- Choose the correct description of ACID properties.
- Which of the following best names the concept in which an SQL operation that combines rows from two or more ta...