By Michael J. Hernandez
Pt. I. Relational Database layout -- Ch. 1. Relational Database -- Ch. 2. layout goals -- Ch. three. Terminology -- Pt. II. layout procedure -- Ch. four. Conceptual assessment -- Ch. five. beginning the method -- Ch. 6. interpreting the present Database -- Ch. 7. constructing desk buildings -- Ch. eight. Keys -- Ch. nine. box requirements -- Ch. 10. desk Relationships -- Ch. eleven. company ideas -- Ch. 12. perspectives -- Ch. thirteen. Reviewing information Integrity -- Pt. III. different Database-Design matters -- Ch. 14. undesirable layout - What to not Do -- Ch. 15. Bending or Breaking the foundations -- Pt. IV. Appendixes -- App. A. solutions to check Questions -- App. B. Diagram of the Database-Design strategy -- App. C. layout directions -- App. D. Documentation kinds -- App. E. Database-Design Diagram Symbols -- App. F. pattern Designs
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Additional info for Database design for mere mortals. A hands-on guide to relational database design
An example of a table containing null values. • A zero-length string two consecutive single quotes with no space in between ('') is also an acceptable value to languages such as SQL, and can be meaningful under certain circumstances. In an EMPLOYEES table, for example, a zero-length string value in a field called MIDDLEINITIAL may represent the fact that a particular employee does not have a middle initial in his name. Note Due to space restrictions, I cannot always show all of the fields for a given sample table.
Theoretically, reducing implementation time gives you more time to focus on creating and building end-user applications. Yet the primary reason you should be concerned with database design is that it's crucial to the consistency, integrity, and accuracy of the data in a database. If you design a database improperly, it will be difficult for you to retrieve certain types of information, and you'll run the risk that your searches will produce inaccurate information. Inaccurate information is probably the most detrimental result of improper database design it can adversely affect your organization's bottom line.
The object-oriented model incorporates all of the characteristics of an object-oriented programming language and essentially relegates the relational database to the status of a data store. The fundamental idea here is that the database developer handles every aspect of the database, including the sets of operations that manipulate the data in the database from within the object-oriented database programming software. No longer is there a clear separation between the database software and the application programming software.