Concepts of Database Management by Philip J. Pratt

By Philip J. Pratt

Providing concise, state-of-the-art insurance, thoughts OF DATABASE administration, 8e makes use of real-world situations, examples, and illustrations to offer scholars a radical knowing of such severe concerns as database layout, information integrity, concurrent updates, facts defense, and extra. thoroughly up-to-date to Microsoft entry 2013 criteria, the textual content provides SQL in a database-neutral atmosphere and covers all significant subject matters, together with E-R diagrams, normalization, and database layout. It offers exact insurance of the relational version (including QBE and SQL), normalization and perspectives, database management and administration, and extra. complicated subject matters lined contain disbursed databases, information warehouses, kept techniques, triggers, facts macros, and internet Apps. excellent for an introductory database path in a knowledge platforms, company, or CIS software, suggestions OF DATABASE administration, 8e can be utilized in various disciplines through teachers who wish database insurance with out utilizing a exchange publication or a wide educational ebook.

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00 101 101 103 104 105 106 107 108 109 102 102 115 116 119 120 121 122 126 124 124 112 119 121 125 126 120 104 Sample reservations data for Colonial Adventure Tours Q&A Question: To check your understanding of the relationship between customers and reservations, answer the following questions: Which customer made reservation 1600010? For which trip dates does Karen Busa have reservations? Answer: Arnold Ocean made reservation 1600010. Find the row in the Reservation table with the reservation ID 1600010 (see Figure 1-18), and then find the customer number 102.

If the Customer table did not include the rep number, you would not be able to identify the rep for a given customer and the customers for a given rep. More formally, a relation is essentially just a two-dimensional table. If you consider the tables shown in Figure 2-1, however, you might see certain restrictions that you can place on relations. Each column in a table should have a unique name, and all entries in each column should be consistent with this column name. For example, in the CreditLimit column, all entries should, in fact, be credit limits.

All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. The Relational Model 1: Introduction, QBE, and Relational Algebra How does a relational database handle entities, attributes of entities, and relationships between entities?

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