December 2010
Intermediate to advanced
451 pages
11h 16m
English
Content preview from Oracle and PL/SQL Recipes: A Problem-Solution Approach
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C H A P T E R 4
Functions, Packages, and Procedures
PL/SQL applications are composed of functions, procedures, and packages. Functions are PL/SQL programs that accept zero or more parameters and always return a result. Procedures are similar to functions, but they are not required to return a result. Packages are a combination of related functions, procedures, types, and variables. Each of these PL/SQL components helps formulate the basis for small and large applications alike. They differ from anonymous blocks that have been covered in previous recipes because they are all named routines that are stored within the database. Together, they provide ...
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