Read e-book online Agile Database Techniques: Effective Strategies for the PDF

By Scott W. Ambler

ISBN-10: 0471202835

ISBN-13: 9780471202837

* Describes Agile Modeling pushed layout (AMDD) and Test-Driven layout (TDD) techniques, database refactoring, database encapsulation options, and instruments that aid evolutionary strategies* Agile software program builders usually use item and relational database (RDB) expertise jointly and consequently needs to triumph over the impedance mismatch* the writer covers innovations for mapping gadgets to RDBs and for imposing concurrency keep an eye on, referential integrity, shared enterprise common sense, safety entry regulate, reviews, and XML* An agile starting place describes basic talents that each one agile software program builders require, really Agile DBAs* comprises item modeling, UML info modeling, facts normalization, category normalization, and the way to house legacy databases* Scott W. Ambler is writer of Agile Modeling (0471202827), a contributing editor with software program improvement (www.sdmagazine.com), and a featured speaker at software program meetings all over the world

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Questions in priority order. These questions are: ƒ How do I indicate the type of model or storage mechanism? ƒ How do I model tables, entities, and views? ƒ How do I model relationships? ƒ How do I model data attributes and columns? ƒ How do I model keys? ƒ How do I model constraints and triggers? ƒ How do I model stored procedures? ƒ How do I model sections within a database? ƒ How do I model everything else? Note The notation presented here isn’t perfect but I truly believe that it’s the best source available to you today.

Although this is implied by the fact that there is an aggregation relationship between the two tables, the constraint makes this explicit. However, too many RI constraints can quickly clutter your diagrams; therefore, supporting documentation for your database design might be a better option for this information — remember AM’s Depict Models Simply practice. 10 the Salary table includes an access control constraint, only people in the Human Resources (HR) department are allowed to access this information.

Triggers are modeled using the notation for operations. 11 you see that the stereotype of <> was applied and value of “after insert” and “before delete” were modeled to show when the triggers would be fired. 11. This class lists the operation signatures of the stored procedures using the standard UML notation for operation signatures. Stylistically, the name of this class should either be the database or the name of the package within the database. Note Although it is standard UML practice for stereotypes to be singular, in this case the plural form makes the most sense.

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Agile Database Techniques: Effective Strategies for the Agile Software Developer (Wiley Application Development) by Scott W. Ambler


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