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Oracle PLSQL - Introduction

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Published in: Oracle Training
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The document contains Information about PLSQL Tutorials

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  1. PL/SQL Tutorial PL/SQL is a combination of SQL along with the procedural features of programming languages. It was developed by Oracle Corporation in the early 90's to enhance the capabilities of SQL. PL/SQL is one of three key programming languages embedded in the Oracle Database, along with SQL itself and Java. This tutorial will give you great understanding on PL/SQL to proceed with Oracle database and other advanced RDBMS concepts. Audience This tutorial is designed for Software Professionals, who are willing to learn PL/SQL Programming Language in simple and easy steps. This tutorial will give you great understanding on PL/SQL Programming concepts, and after completing this tutorial, you will be at an intermediate level of expertise from where you can take yourself to a higher level of expertise. Prerequisites Before proceeding with this tutorial, you should have a basic understanding of software basic concepts like what is database, source code, text editor and execution of programs, etc. If you already have an understanding on SQL and other computer programming language, then it will be an added advantage to proceed. The PL/SQL programming language was developed by Oracle Corporation in the late 1980s as procedural extension language for SQL and the Oracle relational database. Following are certain notable facts about PL/SQL PL/SQL is a completely portable, high-performance transaction-processing language. PL/SQL provides a built-in, interpreted and OS independent programming environment. PL/SQL can also directly be called from the command-line SQL*Plus interface. Direct call can also be made from external programming language calls to database. PL/SQL's general syntax is based on that of ADA and Pascal programming language. Apart from Oracle, PL/SQL is available in TimesTen in-memory database and IBM DB2. Features of PL/SQL PL/SQL has the following features • PL/SQL is tightly integrated with SQL. It offers extensive error checking. It offers numerous data types. It offers a variety of programming structures. It supports structured programming through functions and procedures.
  2. It supports object-oriented programming. It supports the development of web applications and server pages. Advantages of PL/SQL PL/SQL has the following advantages SQL is the standard database language and PL/SQL is strongly integrated with SQL. PL/SQL supports both static and dynamic SQL. Static SQL supports DML operations and transaction control from PL/SQL block. In Dynamic SQL, SQL allows embedding DDL statements in PL/SQL blocks. PL/SQL allows sending an entire block of statements to the database at one time. This reduces network traffic and provides high performance for the applications. PL/SQL gives high productivity to programmers as it can query, transform, and update data in a database. PL/SQL saves time on design and debugging by strong features, such as exception handling, encapsulation, data hiding, and object-oriented data types. Applications written in PL/SQL are fully portable. PL/SQL provides high security level. PL/SQL provides access to predefined SQL packages. PL/SQL provides support for Object-Oriented Programming. PL/SQL provides support for developing Web Applications and Server Pages.

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