CIS 111 Week 6 Discussion Data Modeling Techniques to Capture the Information Requirements
CIS 111 Week 6 Discussion Data Modeling Techniques to Capture the Information Requirements
"Data Modeling Techniques to Capture the Information Requirements" Please respond to the following:
In the entity relationship approach to modeling we analyze system requirements and classify our knowledge in terms of entities, relationships, and attributes. Entities are the things we decide to keep track of. For example, if one considers a system to support an educational environment, one is likely to decide that we need to keep track of students, instructors, courses, etc. Typically, entities are the people, places, things, and events that we need to remember something about. Entities and relationships have characteristics that describe them. For instance, the students may be described by the values for their names, ID numbers, and phone numbers. Consider a student named John whose ID number is 184 and his phone number is 283-4984. Research data modeling techniques and capturing information requirements.
Entity relationship modeling is a critical element of database design. If the database is not properly modeled, it is unlikely that the database will be properly developed. Using this knowledge, explain the key reasons why entity relationship modeling is important, and determine at least (1) way in which it impacts the overall development of the database.
Engage the following resource(s) to get started.
Video(s)
Illustration on ER Model to Relational Tables- 1 | Database Management System
https://www.youtube.com/watch?v=Dggxri0iYLI
ERD #2 Mapping ERD to Relations
https://www.youtube.com/watch?v=xUhd-p5knmo
Entity Relationship Diagram (ERD) Tutorial - Part 1
https://www.youtube.com/watch?v=QpdhBUYk7Kk
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Posted 14 Oct 2020 06:10 PM
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