1 / 8

Database Fundamentals: ERD Creation to Data Normalization

Learn essential Database Fundamentals including Entity-Relationship Diagram creation, logical and physical design, normalization, DDL, and more. Understand the role of a Database Administrator (DBA) and how to ensure data quality.

coy
Télécharger la présentation

Database Fundamentals: ERD Creation to Data Normalization

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. BA471Management InformationSystems Databases - continued

  2. Database Fundamentals • Data modeling – next steps • Create an ERD • Logical design • Relational • Data definitions • Business definitions • Metadata • Domain

  3. Database Fundamentals • Physical data design • Forward engineer a physical database • DDL – Data Definition Language • Creates Schema • Role of the Database Administrator (DBA)

  4. Database Fundamentals • Data normalization: Physical implementation of data in its logical groupings • De-normalized data example:

  5. Database Fundamentals • Normalized example: ORDER ORDER-PRODUCT First Normal Form (1NF)

  6. Database Fundamentals • Normalized example (3NF):

  7. Database Fundamentals • Enterprise Data Warehouse ERP Product Data extract EDW Summarized Product Data Reports Online Inquiry Finance Sys Product Revenue Data extract

  8. Database Fundamentals • Data Quality issues • Ways in which data quality can be compromised • Errors at data entry • Software-introduced errors • Deterioration over time • Sabotage • Honest mistakes

More Related