MODULE 4MIS607 Cybersecurity
网络安全作业代写 An entity may have one or more attributes. For example, a student entity may have student ID, student name, date of birth and
Welcome to Module 4!
In this module, you will look at data modelling. Understanding data entities and their relationships is crucial to the development of any information system. A data model ensures consistency and integrity of data in an information system, as well as helping to identify redundancies. You will explore the diferent types of data models including conceptual, logical and physical data model.
An Entity Relationship Diagram ( ERD) is the most commonly used diagram in conceptual data modelling. Conceptual data modelling is not concerned with the implementation details of a Database Management System ( DBMS). The purpose of conceptual data modelling is to identify and describe data entities and their relationships in a system. An entityis an object or concept that is of interest and important to a system. Take student record system for example,“student”, 网络安全作业代写
“subject”,“course”are entities that are of interest to the system.
You should note that an entity does not refer to individual data object. A student entity does not refer to any speciic student. It represents the structure or a blueprint for all “students”stored in the system.
An entity may have one or more attributes. For example, a student entity may have student ID, student name, date of birth and other attributes. Entities in a system are not independent of each other: they are in fact related to one another. For example, a student can enrol into a course. It is important to capture and model this relationship, because it provides the system the capability to list all students enrolled in a particular course. You will learn more about entity, relationship and attribute in Module 4.1.
In Module 4.1, we will also introduce you to another diagramming tool, that is, the State Transition Diagram (STD). Unlike ERD, STD is not concerned with modelling all the data entities and their relationships. Rather, it looks at the various states that a data entity can transition to through the lifecycle of that data entity and what actions trigger the transition. 网络安全作业代写
Module 4.2 focus on system design with a particular focus on database design Module 4.2. In doing so you will learn how to transform an ERD to a logical and physical design of database. In particular, you will learn to map unary and binary one to one, one to many and many to many relationships to relational database design. You will also learn database normalisation, a process to ensure the database design conform to a series of normal forms to reduce data redundancy. In addition to this, you will explore three normal forms that is irst, second, and third normal form (1 NF, 2NF, and 3NF). You will be required to rectify a database design that is not in its right normal form.
This Module will cover: 网络安全作业代写
Module 4.1 – Data modelling I
Module 4.2 – Data modelling II
This Module will help you achieve the following outcomes:
a) Identify, critically evaluate and recommend information systems solutions for ineiciencies in business processes, procedures and work practices using data and process modelling techniques.
b) Formulate, validate and document business requirements for a medium- scale information system development project and efectively communicate these requirements to the stakeholders. 网络安全作业代写
c) Demonstrate the ability to efectively analyse, design and develop information systems using Uniied Modelling Language (UML) models.
d) Demonstrate team work skills and empathy while maintaining high level of ethical and legal behaviour and standards as a professional.
Time Management: 网络安全作业代写
Your workload expectation is 20 hours for this module.
20 hours per module (two weeks): facilitated study: 3 hours / week. Personal Study: 7 hours / week.
3 hours facilitated study consists of attending class, responding to facilitator feedback. 网络安全作业代写
You are to allocate 7 hours of personal learning. This includes essential time
spent on pre-reading and viewing materials, assessment progression and learning activities.
Assessment 2 is due at the end of Module 4.2. Both Module 3 and Module 4 content is highly relevant to Assessment 2. Please make sure you review Module 3 and complete all learning activities in Module 4 in preparation for your forthcoming assessment.
Class Expectation: 网络安全作业代写
You are expected to have worked through the essential learning resources
and activities for this module beforeattending the facilitated session (face to face or online session) – this enables informed discussion and full participation in learning activities.
Participate in all scheduled facilitated sessions.
This time is intended to be used by you and your learning facilitator to 网络安全作业代写
work through activities and engage in discussion about the module content.
These sessions provide a space for you to raise questions about the
module content and seek guidance on writing your assessments.