Choose the correct answerWe indicate roles in E-R diagrams by labeling the lines that connect ___________ to __________OptionsRectangle, diamondDiamond , diamondRectangle, rectangleDiamond, rectangle

To indicate roles in E-R diagrams, we label the lines that connect ___________ to __________. The options are:

• Rectangle, diamond
• Diamond, diamond
• Rectangle, rectangle
• Diamond, rectangle

To choose the correct answer, we need to understand the purpose of each shape in an E-R diagram. In an E-R diagram, rectangles represent entity sets, which are collections of similar entities. Diamonds represent relationship sets, which describe the associations between entity sets.

Since we are indicating roles, we need to consider the relationship between two entity sets. The correct answer is therefore the option that connects a diamond (representing a relationship set) to a rectangle (representing an entity set).

Looking at the options, we can see that the correct answer is "Diamond, rectangle".