{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Appendix Introduction to Data Modeling

Appendix Introduction to Data Modeling - Appendix ,

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Appendix Introduction to Data Modeling The Importance of Relational Databases The relational model enables Access to store data in tables and then link  tables via common fields. Single tables can lead to redundancy, which not only can result in the  database table taking up unneeded storage space (especially for a realistic- sized database table involving millions of records) but also causes problems  when trying to insert new records, delete existing records, or update records. Problems when trying to insert new records, delete existing records, or  update records are referred to as anomalies and can harm the integrity of the  database records. Relational databases store data in multiple tables in which records in one  table can be related to records of another table.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern