Appendix Introduction to Data Modeling

Appendix Introduction to Data Modeling - Appendix...

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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. Logical modeling provides tools to help analyze and understand what data 
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This note was uploaded on 11/18/2010 for the course MIST 2090 taught by Professor Piercy during the Fall '08 term at University of Georgia Athens.

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Appendix Introduction to Data Modeling - Appendix...

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