Database Systems: The Complete Book (GOAL Series) by Hector Garcia-Molina, Jeffrey D. Ullman, Jennifer D. Widom

By Hector Garcia-Molina, Jeffrey D. Ullman, Jennifer D. Widom

For Database structures and Database layout and alertness classes provided on the junior, senior and graduate degrees in laptop technological know-how departments. Written by way of recognized desktop scientists, this creation to database platforms deals a entire procedure, targeting database layout, database use, and implementation of database functions and database administration platforms. the 1st half the ebook presents in-depth insurance of databases from the viewpoint of the database clothier, person, and alertness programmer. It covers the newest database criteria SQL:1999, SQL/PSM, SQL/CLI, JDBC, ODL, and XML, with broader assurance of SQL than such a lot different texts. the second one half the e-book presents in-depth insurance of databases from the viewpoint of the DBMS implementor. It specializes in garage buildings, question processing, and transaction administration. The booklet covers the most suggestions in those parts with broader assurance of question optimization than so much different texts, besides complicated issues together with multidimensional and bitmap indexes, dispensed transactions, and knowledge integration strategies. assets: writer site

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Additional resources for Database Systems: The Complete Book (GOAL Series)

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Supporting relationships, and keys. 4: Draw E/R diagrams for the following situations involving wts. In each case indicate keys for entity sets. a) sets Courses and Departments. A course is given by a unique department, bl:t its only attribute is its number. Different departments can Wer courses with the same number. Each department has a unique nafle, SULW1WARY OF CHAPTER 2 Entity sets Leagues, Teams, and Players. League names are unique. No league has two teams with the same name. No team has two players with the same number.

People who are parents. Ve have yet to learn many of the details of the E/R model; but we have enough to begin study of the crucial issue of what constitutes a good design and what should be avoided. In this section, we offer some useful design principles. 1 1. Females. 39 Faithfulness First and foremost, the design should be faithful to the specifications of the application. That is, entity sets and their attributes should reflect reality. You can't attach an attribute number-of-cylnders to Stars, although that attribute would make sense for an entity set Anrtomob~les.

Its supporting many-one relationships will be shown as diamonds with a double border. Examples of this conyention are Unit-of in Fig. 20 and all three relationships in Fig. 22. CHAPTEX 2. THE ENTITY-RELATIONSHIP DATA MODEL 3. If an entity set supplies any attributes for its own key, then those attributes will be underlined. An example is in Fig. 20, where the number of a crew participates in its own key, although it is not the complete key for Crews. \fle can summarize these conventions with the following rule: TVhenever we use an entity set E with a double border, it is weak.

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