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The entity-relationship model (or ER model) is a way of graphically representing the logical relationships of entities (or objects) in order to create a database. This is also referred to as the data model.
Employing a data model permits the designer to present data visually. These models focus on representing the data in terms of a user's viewpoint. During our discussion, let's also consider not only the importance and advantages of data modeling but also do some web research regarding modeling tools.
Explain the value of utilizing the entity relationship model (ER Model) and the entity relationship diagram (ERD) for relational databases. Is this an advantage or disadvantage? Why?
....In other words why would anyone want to do data modeling?
What are the advantages of data modeling?
Understand the challenges and evaluate the risks in managing the security of an information system Critically analyse using a threat and risk assessment.
Under what situations would denormalization of a database schema be used? Give examples of denormalization.
Write a script that calculates the common factors between 10 and 20. To find a common factor, you can use the modulo operator (%) to check whether a number can be evenly divided into both numbers.
Create a document named: surnameStudentIDAssign1.doc . In your document, you must include the following section headings: System Overview, Class Diagram, Class Descriptions, Testing.
part 1 true or false please explain why. 1 sql structured query language is both ddl data definition language and dml
write a one to two 1-2 page paper in which youq1. describe your experiences related to your setup of mysql. include any
What is the role of a DBMS, and what are it advantages - what are its disadvantages?
Define database architecture. Consider Microsoft® Access®, Microsoft® SQL Server®, Oracle®, and IBM DB2® software as possible examples.
You need to store information on the business's employees, inventory, and completed sales. You also need to account for the fact that each salesperson receives a different percentage of their sales in commission. What tables and columns would you ..
write a six to eight 6-8 page paper in which youquestion 1. provide an executive overview that addresses the
You are provided with a case which will be used for the assignments dealing with design and implementation of database.
Describe how that firms likely use or should use Management Information Systems, Information Systems and Information Technology as it relates to the various topics covered in the class.
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