Database Management Systems (DBMS)
Which statement correctly explains Entity-Relationship (ER) diagram?
Difficulty: Medium
About this MCQ
This Medium Database Management Systems (DBMS) MCQ checks one syllabus fact.
The question is: “Which statement correctly explains Entity-Relationship (ER) diagram?”
The accepted answer is A. A diagram that visually represents entities and their relationships within a database.. A diagram that visually represents entities and their relationships within a database is the person body or term that satisfies Which statement correctly explains Entity-Relationship ER diagram option A Option B 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 diagram that visually represents entities and their relationships within a database 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 diagram that visually represents entities and their relationships within a database Remaining alternatives A virtual table based.
- A. A diagram that visually represents entities and their relationships within a database. ✓
- B. A minimal set of attributes that can uniquely identify a record in a table.
Why not B: “A minimal set of attributes that can uniquely identify a record in a table.” is not correct. The accepted answer is A. A diagram that visually represents entities and their relationships within a database.. A diagram that visually represents entities and their relationships within a database is the person body or term that satisfies Which statement correctly explains Entity-Relationsh
- 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 A. A diagram that visually represents entities and their relationships within a database.. A diagram that visually represents entities and their relationships within a database is the person body or term that satisfies Which statement correctly explains Entity-Relationsh
- D. A virtual table based on the result of a stored SQL query.
Why not D: “A virtual table based on the result of a stored SQL query.” is not correct. The accepted answer is A. A diagram that visually represents entities and their relationships within a database.. A diagram that visually represents entities and their relationships within a database is the person body or term that satisfies Which statement correctly explains Entity-Relationsh
Correct answer
A. A diagram that visually represents entities and their relationships within a database.
Explanation
A diagram that visually represents entities and their relationships within a database is the person body or term that satisfies Which statement correctly explains Entity-Relationship ER diagram option A Option B 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 diagram that visually represents entities and their relationships within a database 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 diagram that visually represents entities and their relationships within a database Remaining alternatives A virtual table based.
Source: Database Management Systems (DBMS) Official Reference Guide
Tags: computer science, dbms, SQL, databases
Submitted by: MCQsHub Editorial
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