Question
Which data modeling technique is used to represent the
relationships between entities in a database?Solution
An Entity-Relationship Diagram (ERD) is a data modeling technique used to represent entities, their attributes, and the relationships between them in a database. It helps visualize how data is related and supports database design by defining the structure of the database. b) Data Flow Diagram (DFD) shows data flow and process interactions but not entity relationships. c) UML provides a range of diagrams, including class diagrams and use case diagrams, but ERD specifically represents database relationships. d) Class Diagram is used in object-oriented design to show classes and their relationships, not database entities. e) State Diagram represents states of an object in a system, not entity relationships.
- Determine the total sum of all three-digit numbers that are divisible by both 2 and 7.
- What is the largest value of 'k' that makes the number '415k27' divisible by 3?
How many 100 digit positive numbers are there?
A number 'N' when divided by 14 leaves 9 as remainder. If 2N² is divided by 14, then find the remainder.
If (2/3)rd of ‘x’ exceeds (2/5)th of (x + 5) by 6, then find the value of ‘x’.
- Find the median of the following observations:
42, 38, 45, 50, 48, 52, 47, 46, 44 How many two-digit even numbers can be formed using the digits 3, 4, 5, 7, and 8, ensuring that no digit is repeated?
If the 4-digit number m52n is exactly divisible by 9, then what is the least value of (m + n)?
What is the remainder when 7100 is divided by 100?