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Download Beginning PL/SQL : from novice to professional by Donald Bales PDF

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By Donald Bales

Get begun with PL/SQL, the integrated language that each Oracle developer and database administrator needs to understand, in Beginning PL/SQL, a fast paced and example-filled educational. examine from writer Don Bales broad adventure to find the main customary features of PL/SQL, with out losing time with imprecise and out of date positive factors.

Bales takes his 20+ years of expertise and a wealth of information he is collected on PL/SQL utilization over these years and applies the 80/20 rule: hide what is such a lot wanted and utilized by PL/SQL execs and stay away from what is now not helpful! the result's a e-book that covers all of the key positive factors of PL/SQL with no wasting precious time discussing esoteric and out of date components of the language. examine what relatively issues, that you can get to paintings feeling convinced with what you recognize approximately PL/SQL.

  • Discover the 20% of PL/SQL that offers you eighty% of the bang! Key issues coated contain variables and datatypes, executing statements, operating with cursors, real-world items, debugging, checking out, and more.
  • Learn how you can write production-level, object-oriented PL/SQL. You'll discover relational PL/SQL, yet in contrast to so much different books at the topic, this one emphasizes using PL/SQLs object-oriented gains to boot.
  • Work via actual examples of utilizing of PL/SQL. You'll examine PL/SQL through making use of it to real-world company difficulties, now not by way of heavy theory.

What you’ll learn

  • How very important SQL is in PL/SQL
  • How to exploit PL/SQL in either a relational and object-relational environment
  • How to create maintainable, modular, and reusable PL/SQL application devices
  • The significance of checking out as you pass, and of establishing an enduring attempt plan for every module
  • The value of creating debugging functions into your code and development an enduring debug facility for every module
  • The significance of documenting as you pass, and within the method construction an everlasting documentation set in your reusable modules
  • How to use modular PL/SQL to unravel real-world difficulties

Who this e-book is for

someone who desires to the right way to create saved strategies opposed to an Oracle database utilizing PL/SQL. Programmers constructing functions to be deployed opposed to an Oracle database will desire PL/SQL to take complete benefit of the ability Oracle has to supply. Database directors who desire to enforce performance uncovered in simple terms through PL/SQL package deal interfaces also will locate this e-book necessary.

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Extra info for Beginning PL/SQL : from novice to professional

Example text

They ensure the integrity of the relational references between rows in related tables. ” It’s Your Turn to Create a Constraint Too much talking and not enough walking! Guess what? It’s time to put you to work on creating a primary key constraint against the publication table. 1. Write a DDL script to create a primary key constraint against the publication table. ) 2. pkc extension. 3. Execute your script in SQL*Plus by typing an at sign (@) followed by the filename at the SQL> prompt. ”). Otherwise, try to make some sense out of the error message(s) you got, correct your script, and then try again.

Hang on a second! I’ve got to go splash some cold water on my face. OK, I’m back. The moral of the story is don’t use PL/SQL to do something you can already do with SQL. I’ll be harping on this soapbox throughout the book, so if you didn’t get my point, relax, you’ll hear it again and again in the coming chapters. Delete In practice, data is rarely deleted from a relational database when compared to how much is input, updated, and queried. Regardless, you should know how to delete data. With DELETE however, you need to do things backwards.

Well, that’s the purpose of triggers. Triggers Triggers are PL/SQL programs that are set up to execute in response to a particular event on a table in the database. The events in question can take place FOR EACH ROW or for a SQL statement, so I call them row-level or statement-level triggers. The actual events associated with triggers can take place BEFORE, AFTER, or INSTEAD OF an INSERT, an UPDATE, or a DELETE SQL statement. Accordingly, you can create triggers for any of the events in Table 1-4.

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