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• The Oracle database software will transform recorded/stored data and statistics into useful pieces of information.. • Data: Each student’s test score is one
• Distinguish between using date as an attribute and DAY as an entity in a data model, depending on business requirements. • Solve the problem of keeping characteristics of a date by
• Single-row functions operate on single rows only and return. one result
• Select and apply character-manipulation functions CONCAT, SUBSTR, LENGTH, INSTR, LPAD, RPAD, TRIM, and REPLACE in a SQL query.. • Write flexible queries using
converted to another type, SQL uses a set of general functions designed specifically to deal with null values.. • You may be wondering how a value that
• In a query using a GROUP BY and HAVING clause, the rows are first grouped, group functions are applied, and then only those groups matching the HAVING clause are
– For example, DATE data type columns always produce date values.. – You cannot insert the wrong type of data into
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