ORACLE Lecture 1: Oracle 11g Introduction & Installation

Overview Introduction Installation Using SQL to Query Your Database Oracle SQL Developer

Oracle Database 11g: Focus Areas Infrastructure Grids Information Management Application Development

Oracle Database 11g Manageability High availability Performance Security Information integration

Data Storage on Different Media Electronic spreadsheet Filing cabinet Database

Relational Database Concept ◦ Dr. E. F. Codd proposed the relational model for database systems in ◦ It is the basis for the relational database management system (RDBMS). ◦ The relational model consists of the following:  Collection of objects or relations  Set of operators to act on the relations  Data integrity for accuracy and consistency

Definition of a Relational Database A relational database is a collection of relations or two-dimensional tables. Table name: EMPLOYEES Table name: DEPARTMENTS … …

Data Models

Overview Introduction Installation Using SQL to Query Your Database Oracle SQL Developer

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Overview Introduction Installation Using SQL to Query Your Database Oracle SQL Developer

Using SQL to Query Your Database Structured query language (SQL) is: ◦ The ANSI standard language for operating relational databases ◦ Efficient, easy to learn, and use ◦ Functionally complete (With SQL, you can define, retrieve, and manipulate data in the tables.) SELECT department_name FROM departments;

SQL Statements

Development Environments for SQL ◦ Primarily use Oracle SQL Developer, Release 1.2

Overview Introduction Installation Using SQL to Query Your Database Oracle SQL Developer

What Is Oracle SQL Developer? ◦ Oracle SQL Developer is a graphical tool that enhances productivity and simplifies database development tasks. ◦ You can connect to any target Oracle database schema by using the standard Oracle database authentication.

Specifications of Oracle SQL Developer ◦ Developed in Java ◦ Supports Windows, Linux, and Mac OS X platforms ◦ Default connectivity by using the JDBC Thin driver ◦ Does not require an installer  Unzip the downloaded Oracle SQL Developer kit and double- click sqldeveloper.exe to start Oracle SQL Developer. ◦ Connects to any Oracle Database, version and later ◦ Freely downloadable from the following link:  eloper/index.html ◦ Needs JDK 1.5 installed on your system, which can be downloaded from the following link: 

Oracle SQL Developer Interface

Creating a Database Connection ◦ You must have at least one database connection to use Oracle SQL Developer. ◦ You can create and test connections for:  Multiple databases  Multiple schemas ◦ Oracle SQL Developer automatically imports any connections defined in the tnsnames.ora file on your system. ◦ You can export connections to an XML file. ◦ Each additional database connection created is listed in the Connections Navigator hierarchy.

Creating a Database Connection

Browsing Database Objects Use the Connections Navigator to: ◦ Browse through many objects in a database schema ◦ Review the definitions of objects at a glance

Using the SQL Worksheet ◦ Use the SQL Worksheet to enter and execute SQL, PL/SQL. ◦ Specify any actions that can be processed by the database connection associated with the Worksheet. Enter SQL Statements. Results are shown here.

Using the SQL Worksheet

Executing SQL Statements Use the Enter SQL Statement box to enter single or multiple SQL statements.

Formatting the SQL Code Before formatting After formatting

Saving SQL Statements 1 2 3

Running Script Files 1 2 3