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In an ER diagram, how is a primary key typically represented?

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Question: In an ER diagram, how is a primary key typically represented?

Options:

  1. Underlined text
  2. Bold text
  3. Italicized text
  4. In a different color

Correct Answer: Underlined text

Solution: 

A primary key is typically represented by underlined text in an ER diagram.

In an ER diagram, how is a primary key typically represented?

Practice Questions

Q1
In an ER diagram, how is a primary key typically represented?
  1. Underlined text
  2. Bold text
  3. Italicized text
  4. In a different color

Questions & Step-by-Step Solutions

In an ER diagram, how is a primary key typically represented?
  • Step 1: Understand what an ER diagram is. It is a visual representation of entities and their relationships in a database.
  • Step 2: Know what a primary key is. It is a unique identifier for each record in a table.
  • Step 3: Look for the text that represents the primary key in the ER diagram.
  • Step 4: Identify that the primary key is shown by underlining the text in the diagram.
  • Primary Key Representation – In an ER diagram, a primary key is represented by underlined text to distinguish it from other attributes.
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