Download Database Modeling and Design: Logical Design by Toby J. Teorey, Sam S. Lightstone, Thomas P. Nadeau PDF

By Toby J. Teorey, Sam S. Lightstone, Thomas P. Nadeau

Database platforms and database layout know-how have passed through major evolution in recent times. The relational information version and relational database structures dominate company purposes; in flip, they're prolonged by way of different applied sciences like info warehousing, OLAP, and knowledge mining. How do you version and layout your database program in attention of recent expertise or new company wishes?
In the greatly revised fourth version, you ll get transparent factors, plenty of superb examples and an illustrative case, and the relatively functional suggestion you will have come to count number on--"with layout principles which are acceptable to any SQL-based system." yet you ll additionally get lots that will help you develop from a brand new database fashion designer to an skilled dressmaker constructing industrial-sized systems.
+ an in depth examine the Unified Modeling Language (UML-2) in addition to the entity-relationship (ER) process for info specifications specification and conceptual modeling--with examples through the booklet in either methods!
+ the main points and examples of ways to take advantage of info modeling strategies in logical database layout, and the transformation of the conceptual version to the relational version and to SQL syntax;
+ the basics of database normalization in the course of the 5th common form;
+ functional insurance of the most important matters in enterprise intelligence--data warehousing, OLAP for choice help structures, and information mining;
+ examples for a way to take advantage of the most well-liked CASE instruments to address advanced info modeling difficulties.
+ routines that try knowing of all fabric, plus options for lots of exercises."

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Extra resources for Database Modeling and Design: Logical Design

Sample text

3. Use UML when it is useful. Don’t feel compelled to write a UML document just because you feel you need a UML document. UML is not an end in itself, but it is an excellent design tool for appropriate problems. 4. Accompany your diagrams with textual descriptions, thereby clarifying your intent. 4 Summary oriented verbally, others visually. Combining natural language with UML is effective. 5. Take care to clearly organize each diagram. Avoid crossing associations. Group elements together if there is a connection in your mind.

The construct is organizational, and doesn’t carry inherent semantics. The meaning is suggested by your choice of subset names. 12. Control flows to the first activity, where the customer requests a quote (Request quote). Control remains in an activity until that activity is completed; then the control follows the outgoing arrow. When the request for a quote is complete, the Manufacturer generates a quote (Generate quote). Then the Customer reviews the quote (Review quote). The next construct is a branch, represented by a diamond.

12, after the Customer receives the order and the invoice, then the Customer will pay (Pay). All incoming threads must complete before control continues along the outgoing arrow. 12, the Customer pays, the Manufacturer records the payment (Record payment), and then a final state is reached. Notice that an activity diagram may have multiple final states. However, there can only be one initial state. There are at least two uses for activity diagrams in the context of database design. Activity diagrams can specify the interactions of classes in a database schema.

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