Database Modelling Fundamentals

Matching the model to real business requirements

Design phase

To ensure data integrity

<p>Characteristics of entities, equivalent to fields in file systems</p> Signup and view all the answers

<p>To provide precise descriptions of policies or procedures within an organization</p> Signup and view all the answers

<p>Entities, attributes, relationships, and constraints</p> Signup and view all the answers

<p>Well-defined columns, keys, indexes, and triggers as needed.</p> Signup and view all the answers

<p>To visualize individual pieces of information and their organization and relationships.</p> Signup and view all the answers

<p>A person, place, event, concept, or object about which data is collected by an organization.</p> Signup and view all the answers

<p>Information captured about an entity, such as last name, home address, or email address.</p> Signup and view all the answers

<p>A physical data model defines the physical storage and implementation of a database, whereas other models (conceptual, logical, enterprise) focus on the abstract representation of data.</p> Signup and view all the answers

<p>To support database functionality and provide a way to execute complex operations.</p> Signup and view all the answers

<p>Identifying, defining, and relating major entities of interest in the project or organization</p> Signup and view all the answers

<p>A Conceptual Data Model is a high-level concept, while a Logical Data Model is a more detailed and refined model</p> Signup and view all the answers

<p>It is derived from the Conceptual Model and is dependent on the implementation technology but is DBMS independent</p> Signup and view all the answers

<p>Physical Data Model</p> Signup and view all the answers

<p>The target implementation technology and DBMS</p> Signup and view all the answers

<p>Denormalization</p> Signup and view all the answers