By Donald Bales
Start with PL/SQL, the integrated language that each Oracle developer and database administrator needs to understand, in starting PL/SQL, a fast paced and example-filled educational. research from writer Don Bales' large adventure to find the main generic points of PL/SQL with no losing time with vague and out of date features.Author Don Bales takes his 20+ years of expertise and a wealth of information he is amassed on PL/SQL utilization over these years and applies the 80/20 rule - conceal what is so much wanted and utilized by PL/SQL pros and stay away from what is now not useful! the result's a booklet that covers all of the key positive aspects of PL/SQL with out wasting precious time discussing esoteric and out of date components of the language. research what particularly concerns, so you might get to paintings feeling convinced with what you recognize approximately PL/SQL. * become aware of the 20% of PL/SQL that provides you eighty% of the bang - key subject matters lined comprise variables and datatypes, executing statements, operating with cursors, real-world gadgets, debugging, trying out, and extra. * how one can write production-level, object-oriented PL/SQL - you are going to discover relational PL/SQL, yet not like such a lot different books at the topic, Don Bales emphasizes using PL/SQL's object-oriented beneficial properties in addition. * paintings via actual examples of utilizing of PL/SQL - you are going to study PL/SQL via utilizing it to real-world company difficulties, now not through heavy theory.What you are going to examine * How very important SQL is in PL/SQL * easy methods to use PL/SQL in either a relational and object-relational atmosphere * easy methods to createmaintainable, modular, and reusable PL/SQL application devices * the significance of checking out as you move, and of creating an everlasting try out plan for every module * the significance of establishing debugging services into your code and construction an everlasting debug facility for every module * the significance of documenting as you move, and within the procedure construction an everlasting documentation set in your reusable modules * how one can practice modular PL/SQL to resolve real-world problemsWho is that this booklet for?Anyone who desires to the way to create kept techniques opposed to an Oracle database utilizing PL/SQL. Programmers constructing purposes to be deployed opposed to an Oracle database will desire PL/SQL to take complete good thing about the facility Oracle has to supply. Database directors who desire to enforce performance uncovered in basic terms through PL/SQL package deal interfaces also will locate this booklet useful.About the Apress starting SeriesThe starting sequence from Apress is the proper option to get the knowledge you must land that an important entry-level task. those books will train you a customary and significant expertise from the floor up simply because they're explicitly designed to take you from "novice to expert. you are going to commence your trip through seeing what you must be aware of - yet with out useless conception and filler. you are going to construct your ability set by means of studying find out how to prepare real-world initiatives step-by-step. So no matter if your target is your subsequent profession problem or a brand new studying chance, the start sequence from Apress will take you there - it's your relied on consultant via strange territory!"
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Additional info for Beginning PL/SQL
Implement a seamless layer of user-defined security against tables and columns. Let’s say we want to create a view that combines the author and publication tables so it’s easier for a novice SQL*Plus user to write a report about the publications written by each author. Listing 1-11 shows the DDL to create a view that contains the required SQL SELECT statement. Listing 1-11. id; The syntax for the CREATE VIEW statement used in Listing 1-11 is as follows: CREATE [OR REPLACE] VIEW
Understanding that there is a history of information is the single-most portion missing in the analyses of business problems. Most often, a many-to-many relationship table (an intersection) will be created that captures only the “current” relationship between content entities, but there’s always a history, and the history is almost always what’s actually needed to solve the business problem in question. C HA PTER 1 ■ G ENES IS hired In our refresher earlier in this chapter, we worked with two tables (or entities) that did not require us to keep a history.
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