DATABASE FUNDAMENTALS
WHAT IS DATABASE MANAGEMENT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Entity-relationship diagram
|
|
|
Entity diagram
|
|
|
Database diagram
|
|
|
Architectural representation
|
Detailed explanation-1: -1 Answer. The Entity-Relationship diagram gives a logical structure of the database graphically.
Detailed explanation-2: -1. Which of the following gives a logical structure of the database graphically? Explanation: E-R diagrams are simple and clear-qualities that may well account in large part for the widespread use of the E-R model.
Detailed explanation-3: -ER models, also called an ER schema, are represented by ER diagrams. ER modelling is based on two concepts: Entities, defined as tables that hold specific information (data) Relationships, defined as the associations or interactions between entities.
Detailed explanation-4: -An Entity Relationship (ER) Diagram is a type of flowchart that illustrates how “entities” such as people, objects or concepts relate to each other within a system.
Detailed explanation-5: -Logical data modeling belongs to the entity relationship model, built using an Entity Relationship Diagram (known as ERD), a standard modeling technique used as a communication tool by data modelers worldwide. Within it are the complete set of business requirements but not technical components.