Lesson 1: Data Modelling

Question 1

One of the tools database designers use to show the logical relationships
among data is a

Answer 1

data model

Question 2

When organizing a database, key considerations include determining
what data to collect, what the source of the data will be, who will have
access to it, how one might want to use it, and how to monitor database
performance in terms of response time, availability, and other factors.

Answer 2

True

Question 3

A data
model that provides a roadmap for
building database and information
systems by creating a single definition
and format for data that can ensure
data compatibility and the ability to
exchange and integrate data among
systems.

Answer 3

Enterprise data model

Question 4

A data model that
uses basic graphical symbols to show
the organization of and relationships between data.

Answer 4

entity-relationship
(ER) diagram