1. Structured Query Language

2. Course Outlook What is Data? What is a Database? Database Tables DBMS
SQL (The real reason you’re here)
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3. What is Data? It is NOT information!
Information is the result of processing DATA to reveal meaning, whereas DATA is RAW FACTS.
Raw Data must be formatted for storage, processing, and presentation.
Metadata is another form of Data.
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4. Data Continued Data is the building block of information.
Information is produced by processing data.
Example 1:
Each students test score is data, but the average score of the entire class or entire school (its academic progress) is called information.
This academic progress determines how much funding the school gets from the government.

5. Metadata? Metadata: data about … data
Provides description of data characteristics and relationships in data
Example: First name, Last name, Address, City, Age
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6. I know what data is, how do I store it?
The Database!
It is a shared, integrated, STRUCTURED, and Organized computer mechanism which stores a collection of data.
It is used for managing and retrieving information which is done through the use of TABLES.
Zahid Hussin

7. Database Tables Consist of Columns and Rows.
Each row corresponds to a single record or entry.
Fields (Columns) can also have a primary key.
A primary key is a column which is labeled as the INDENTIFIER.
It cannot have any duplicate data.

8. DBMS
The interface which manages the interaction between the End-User and the Database.
Enables data to be shared

9. Most popular DBMS Oracle MySQL Microsoft SQL Server The rest…
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10. Installing and setting up a DBMS
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11. SQL … Finally! Structured Query Language
Defines methods to manipulate database
Manipulating could mean getting information from and updating a database.
An attempt to REQUEST some data from a database is called a QUERY.
Each formed SQL statement refers to an SQL QUERY.
Resembles natural language
Is the standard for the American National Standards Institute (ANSI) and the International Organization for Standardization (ISO).
Zahid Hussin

12. CRUD…what is this? You will be asked to perform CRUD SQL functions.
It is an acronym for the basic database operations;
Create, Read, Update, and Delete.
These can be SQL statements such as Insert, Select, Update, and Delete
Any simple database table enforces CRUD constraints.
If you are ever asked to perform CRUD SQL statements, now you know.
Zahid Hussin

13. CRUD EXAMPLE A Simple student database table;
Adds (Creates) new student details
Accesses (reads) existing student details
Modifies (updates) existing student data as subjects
Deletes student details when students leave the school
The corresponding SQL operations are;
Add (INSERT) new records
Retrieve/Access (SELECT) existing records based on selection conditions
Modify (UPDATE) existing records
Remove (DELETE) tables or entire records
Zahid Hussin

14. CREATE What is; Integer varchar2( ) varchar( ) others General Query:
CREATE TABLE table_name
(first_column_name type_of_data,
Second_column_name type_of_data)
Example:
CREATE TABLE PERSONS
(ID Integer primary key,
FIRSTNAME varchar2(20),
LASTNAME varchar2(20),
CITY varchar2(20),
AGE number)
What is;
Integer
varchar2( )
varchar( )
others
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15. INSERT Data MUST be input into VALUES in row order.
General Query:
INSERT INTO table_name
VALUES (value1, value2, …)
Example:
INSERT INTO PERSONS
VALUES (1, ‘Bat’, ‘Man’, ‘Gotham’, 54)
Remember ID, FIRSTNAME, LASTNAME, CITY, AGE
Data MUST be input into VALUES in row order.
Do some more examples.

16. SELECT General Query: SELECT column_name FROM table_name SELECT *
Example:
SELECT LASTNAME, FIRSTNAME
FROM PERSONS