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OCA Oracle Database 11g: SQL Fundamentals I Exam Guide (Exam 1Z0-051) by Roopesh Ramklass, John Watson

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CERTIFICATION OBJECTIVES
4.01    Describe Various Types of Functions Available in SQL
4.02    Use Character, Number, and Date Functions in SELECT Statements
  Image     Two-Minute Drill
Q&A   Self Test
 
Functions are a wonderful extension to SQL and provide a first glimpse of the procedural capabilities Oracle supports. Procedural languages allow a rich degree of programming that yields an almost unlimited range of data manipulation possibilities. Oracle server implements a proprietary procedural language called PL/SQL, or procedural SQL. A range of ...

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