Oracle PL/SQL by Example by Benjamin Rosenzweig

By Benjamin Rosenzweig

Begin constructing functions with Oracle PL/SQL - quickly! This built-in book-and-Web studying resolution teaches the entire Oracle PL/SQL abilities you wish, fingers on, via real-world labs, wide examples, workouts, initiatives, and a whole Web-based education web site. Oracle PL/SQL via instance, 3rd variation covers Oracle 10g and the entire basics: grasp PL/SQL syntax, iterative and conditional keep an eye on, scoping, anchored datatypes, cursors, triggers, safety, tables, methods, services, applications and Oracle-supplied programs - plus robust new suggestions for operating with exceptions, cursors, collections, and documents. Your unfastened Web-based education module features a digital research living room the place you could have interaction with different inexperienced persons, paintings on new tasks, and get updates!

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2 Answers a) A1: If you ran the previous example in a SQL*Plus, what would be the result? Answer: Assuming SET SERVEROUTPUT ON had been issued, you would get only born on. The reason is that the variables v_name and v_dob have no values. b) Run the example and see what happens. Explain what is happening as the focus moves from one line to the next. A2: Answer: Three variables are declared. When each one is declared, its initial value is null. v_name is set as a varchar2VARCHAR2 with a length of 30, v_dob is set as a character type date, and v_us_citizen is set to BOOLEAN.

Then you progress to learn how to make words from these character sets. Finally, you learn the parts of speech and you can begin talking. You can think of PL/SQL as being a more complex language because it has many character types and, additionally, many types of words or lexical units that are made from these character sets. Once you learn these, you can progress to learn the structure of the PL/SQL language. ), and white space. When elements from one or more of these character types are joined together, they will create a lexical unit (these lexical units can be a combination of character types).

In the following exercises, you will practice putting these units together. 1 Make Use of PL/SQL Language Components Now that you have the character types and the lexical units, it is equivalent to knowing the alphabet and how to spell out words. a) Why does PL/SQL have so many different types of characters? What are they used for? b) What would be the equivalent of a verb and a noun in English in PL/SQL? Do you speak PL/SQL? 2 Make Use of PL/SQL Variables Variables may be used to hold a temporary value.

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