By Toby J. Teorey, Sam S. Lightstone, Tom Nadeau, H.V. Jagadish
Database structures and database layout know-how have gone through major evolution lately. The relational info version and relational database platforms dominate enterprise purposes; in flip, they're prolonged through different applied sciences like information warehousing, OLAP, and information mining. How do you version and layout your database program in attention of recent know-how or new company needs?
In the commonly revised fourth variation, you will get transparent factors, plenty of impressive examples and an illustrative case, and the particularly functional suggestion you will have come to count number on--with layout principles which are acceptable to any SQL-based process. yet you are going to additionally get lots that can assist you develop from a brand new database dressmaker to an skilled clothier constructing industrial-sized systems.
+ a close examine the Unified Modeling Language (UML-2) in addition to the entity-relationship (ER) method for info standards specification and conceptual modeling--with examples during the ebook in either approaches!
+ the main points and examples of ways to take advantage of information modeling ideas in logical database layout, and the transformation of the conceptual version to the relational version and to SQL syntax;
+ the basics of database normalization during the 5th common form;
+ useful assurance of the foremost matters in enterprise intelligence--data warehousing, OLAP for determination aid structures, and knowledge mining;
+ examples for a way to exploit the most well-liked CASE instruments to address complicated facts modeling problems.
+ workouts that attempt figuring out of all fabric, plus ideas for plenty of workouts.
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Additional info for Database Modeling and Design
1 Class Diagrams these are not associated with the behavior of individual rows. The term operations in UML refers to the methods inherent in classes of objects. These behaviors are not stored in the definition of rows within the database. There are no operations named “accelerate” or “brake” associated with rows in our “Car” table. Classes can be shown with attributes and no operations in UML, which is the typical usage for database schemas. 1 illustrates the UML syntax for a class, showing both attributes and operations.
Class diagrams capture structure, activity diagrams capture behavior. The two types of diagrams can present complementary aspects of the same system. 12 illustrates the usage of classes named Quote, Order, Invoice, and Payment. Another use for activity diagrams in the context of database design is to illustrate processes surrounding the database. For example, database life cycles can be illustrated using activity diagrams. 3 Rules of Thumb for UML Usage 1. Decide what you wish to communicate first, and then focus your description.
Forks and joins are both forms of synchronization written with a solid bar. The fork has one incoming flow and multiple outgoing flows. book Page 48 Saturday, July 16, 2005 12:57 PM 48 CHAPTER 3 The Unified Modeling Language (UML) follows all the outgoing flows. These are referred to as concurrent threads. Joins are the opposite of forks; the join construct has multiple incoming flows and one outgoing flow. Control flows from a join only when control has reached the join from each of the incoming flows.