A Guide to SQL (8th Edition) by Philip J. Pratt, Mary Z. Last

By Philip J. Pratt, Mary Z. Last

A advisor TO SQL, 8E, remains to be the fundamental SQL reference. It builds at the good fortune of earlier versions through featuring simple SQL instructions within the context of a working case within which a company makes use of SQL to control orders, components, buyers, and revenues reps. The booklet covers the basics of SQL programming utilizing user-friendly guide and vast hands-on workouts. carrying on with with its specialize in studying the fundamentals whatever the database atmosphere selected, this variation beneficial properties examples from the most recent databases: Oracle 11g, entry 2007, and MySQL. The 8th version expands at the use of operating case stories by means of including a 3rd working case to the large hands-on pedagogy on the finish of each bankruptcy.

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For example, if managers at Premiere Products have a policy never to hire two reps with the same last name, then LAST_NAME would indeed determine the other columns. Without such a policy, however, LAST_NAME would not determine the other columns. 05 FIGURE 2-6 1626 Taylor Fillmore FL Norton FL REP table with two reps named Kaiser PRIMARY KEYS Another important database design concept is the primary key. In the simplest terms, the primary key is the unique identifier for a table. For example, the REP_NUM column is the unique identifier for the REP table.

Air conditioning unit ran fine through multiple tests. Owner to notify technician if the problem recurs. 1 1 12 4 8 Both speed and depth readings on data unit are significantly less than the owner thinks they should be. Technician has scheduled appointment with owner to attempt to verify the problem. 2 0 7/16/2010 13 8 2 Customer describes engine as making a clattering sound. Technician suspects problem with either propeller or shaft and has scheduled the boat to be pulled from the water for further investigation.

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