In an Entity-Relationship (ER) diagram, what geometric shape is used to represent an entity type? MCQ with Answer and Explanation

Question
In an Entity-Relationship (ER) diagram, what geometric shape is used to represent an entity type?
A. Triangle
B. Rectangle
C. Ellipse
D. Diamond
Answer: Option B
Solution (By JKSSB Mock Tests)
In standard ER modeling notation, rectangles are used to represent entity sets or entity types.
This question belongs to: Computer Database Management System (DBMS)
Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Database Management System (DBMS) Questions

Question #1
In an Entity-Relationship (ER) diagram, attributes are represented using which shape?
A. Rectangle
B. Diamond
C. Ellipse/Oval
D. Square
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
Ellipses or ovals are used to represent attributes (properties) of entities in ER diagrams.
This question belongs to: Computer Database Management System (DBMS)
Question #2
What is the purpose of the SQL 'GROUP BY' clause?
A. To join tables
B. To group rows that have the same values in specified columns into summary rows
C. To sort the result set
D. To filter rows
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
GROUP BY organizes data into groups based on the values of one or more columns, often used with aggregate functions.
This question belongs to: Computer Database Management System (DBMS)
Question #3
A database object that automatically executes or fires in response to specific events (like INSERT, UPDATE, or DELETE) on a table is known as a what?
A. Trigger
B. Cursor
C. View
D. Stored Procedure
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
A Trigger is a named database object containing procedural code that automatically runs or fires when a specific DML statement occurs on a designated table.
This question belongs to: Computer Database Management System (DBMS)
Explore All Database Management System (DBMS) MCQs
Today's Top Topics
Cyber Security 269 Database Management System (DBMS) 278 Computer Abbreviations 369 Computer Fundamentals 326 Computer Software 347
Explore Subjects
Accountancy and Statistics 3179 Economy GK 2220 English 15164 Computer 5279 Current Affairs 575
Practice Mix
Which of the following is an indirect tax in India?
The valve between the left atrium and left ventricle is the:
A person faces north. He turns 45° left, then 90° right, then 45° left. Which direction is he facing?
Under the Income Tax Act, the 'TDS' on the sale of an immovable property (other than agricultural land) by a resident is governed by which section, and what is the rate?
In 'Piecemeal Distribution' during dissolution, the first priority for payment of outside liabilities is: