Inf3707 notes - Study guides, Study notes & Summaries

Arithmetic Expressions You may need to modify the way in which number and date data are displayed, or you may want to perform calculations or look at what-if scenarios. These are all possible using arithmetic expressions. An arithmetic expression can contain column names, constant numeric values, and the arithmetic operators. Available arithmetic operators - + Add, - Subtract, * Multiply, / Divide. You can use arithmetic operators in any clause of an SQL statement, except the FROM claus...

INF3707 - Database Design & Implementation Summary - covers the entire module. Great for assignments and exams, document is searchable. The work has been done for you :-)

MQC 1.1 b.View – virtual table, not table on its own but mirrors table(temp table). Multiple tables – complex, single table – simple. In addition, the function and GROUP BY clause prevent changing the displayed data because each record might represent more than one row in the underlying key-preserved Reasons for view table – security, not direct DB access, efficiency – less direct DB hits table. CH. 13, text book pg 517 e-book pg 539 1.2 c. _ and % allows white characters - _ a...

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