Question
Which of the following graphical models represents the
relationships between entity sets in a database?Solution
ER Diagram  stands for Entity Relationship Diagram, also known as ERD. It is a diagram that displays the relationship of entity sets stored in a database. ER diagrams help to explain the logical structure of databases.
• The model helps to systematically analyze data requirements to produce a well-designed database.
• ER diagrams are created based on three basic concepts: entities, attributes and relationships.
• The purpose of ER Diagram is to represent the entity framework infrastructure.
632, 625, 611, 590, 562, ?
30, 42, 54, 66, ?, 90
24  12  18  ?  157.5  708.75  3,898.125
150 Â Â Â 15Â Â Â 3Â Â Â ? Â Â Â Â 0.36Â Â Â Â 0.18
What will come in place of the question mark (?) in the following series?
17, 138, 307, 532, ?, 1182
Find the missing number, in the given number series.
60, 150, ?, 450, 450, 225
10, 10, 15, 30, 75, ?
?, 6, 6, 9, 18, 45
10,14,26,42,70,?
In each of the following number series, one term is missing. Find the missing term.
3, 8, 15, 24, 35, ?