1 / 10

Chapter 14 & 15 Conceptual & Logical Database Design Methodology

Chapter 14 & 15 Conceptual & Logical Database Design Methodology. Definition Conceptual database design Relational database - logical design Relational database - physical design Relational database - operation Example. Definition. Design methodology

iram
Download Presentation

Chapter 14 & 15 Conceptual & Logical Database Design Methodology

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. Chapter 14 & 15Conceptual & Logical Database Design Methodology • Definition • Conceptual database design • Relational database - logical design • Relational database - physical design • Relational database - operation • Example

  2. Definition • Design methodology • Structured design approach using procedures, techniques, tools and documentation aids • Conceptual database design • Constructing an information model, independent from all physical consideration for an enterprise • Logical database design • Building an organization database based on a specific data model • Physical database design • Implementing a database using specific data storage structure(s) and access methods

  3. Conceptual Database Design • Entities • Relationships • Attributes (simple, no composite, no derived) • Attribute domains • Primary and candidate key attributes • Minimal set of attributes • Less change • Uniqueness in the future • Fewest characters • Easy to use by users

  4. Relational Database - Logical Design • Draw ER model • Review • Always binary with1 to many relationship • No complex relationship • No redundant relationship • No recursive relationship • No relationship with attribute(s)

  5. Relational Database - Logical Design • Normalize relations • Primary key • Foreign key • BCNF • Add constraints • Domain & enterprise • Inter & referential • Intra • Entity • legal

  6. Relational Database - Logical Design • Review • Organization current & future needs • All user current & future requirements • Normalization(Boyce-Codd) • Relationship (one-to-one or one-to-many) • Redundancy • Constraints • User approval • Document

  7. Relational Database - Logical Design • Mapping logical database to DBMS • Base relations • Integrity Rules • Referential integrity (delete & update) • No action • Cascade • Set null • Set default • No check

  8. Relational Database - Physical Design • Implementing physical representation • Analysis transactions • File organization • Indexes • Disk space • Security • Policy & procedure • User view • Access rules • Tansmission

  9. Relational Database - Operation • Monitoring & tuning • User requirements • Organization requirements • Performance

  10. Assignment • Review chapters 5-6, 11-15, 24-26 • Read chapters 16-17 • Work on group project • Normalized database due date:

More Related