1. Oracle & SQL Introduction

2. Database Design Revision
Steps in building a database for an application:
Analysis:
Understand real-world domain being captured.
Design:
Specify it using a database conceptual model (ER).
Translate specification to model of DBMS (Relational).
Implementation (using DBMS):
Create schema using DBMS commands (DDL).
Load data (DML).

3. Relational Database
A relational database is a DB that stores the data in the form of tables/relations with rows and columns. Every table shares at least one column with another table (Relationships).
A table/Relation is the category of data, like Staff. The columns are information about the category (Attributes), like name or address and the rows are the actual data or records.

4. Oracle
Oracle is a powerful relational database management system (RDBMS) that offers a large feature set.
Oracle is widely regarded as one of the popular full-featured database systems on the market today.
In almost all relational databases, data is accessed through Structured Query Language (SQL), and Oracle is one of them.
SQL is nonprocedural language that represents a combination of DDL and DML.

5. Data Definition Language (DDL)
DDL is a descriptive language for defining the database schema.
Some of the main SQL-DDL commands are:
CREATE TABLE
ALTER TABLE
DROP TABLE

6. Data Manipulation Language (DML)
DML is a language for retrieving and updating (insert, delete, & modify) the data in the DB.
The main SQL-DML commands are:
SELECT
INSERT INTO
UPDATE
DELETE FROM

7. Simple Queries Syntax: Staff
SELECT { * | column | column_expression [,…] }
FROM table_name;
Staff

8. Simple Queries Retrieve all columns & rows
Example: Retrieve all staff information.
SELECT StaffNo, Fname, Lname, position, sex, DOB, Salary, BrnNo
FROM staff; OR
SELECT *

9. Simple Queries Retrieve specific columns & all rows
Example: List salaries of all staff, showing only the staff number, the full and last name, and salary.
SELECT StaffNo, Fname, Lname, Salary
FROM staff;

10. Simple Queries Row selection (WHERE clause)
Syntax:
SELECT { * | column | column_expression [,…] }
FROM table_name
WHERE condition;
Comparison operators: = , <, >, <=, >=, <>

11. Simple Queries Row selection (WHERE clause)
Example: List all staff with a salary greater than 10,000.
SELECT sno, fname, lname, salary
FROM staff
WHERE salary > 10000;

12. Oracle 11g (SQL Developer)
Demo

18. Connection name: global User name: Sserial-number_section-number
ex: S1_25486
Password: Sserial-number_section-number
Hostname:
Servicename: global11g