1. SQL This presentation will cover: View in database MySQL installation
A Brief History of DBMS
View in database
MySQL installation

2. SQL – DBMS History DBMS History
The IBM’s System/R was not the first DBMS. The first to market was Relational Software's product named Oracle
The second was Relational Technology's Ingres.
IBM then released improved products in 1982 named SQL/DS and DB2. Oracle and DB2 in nth generation forms while the Ingres technology was bought by Computer Associates.

3. SQL - Standards SQL is a open language without corporate ownership.
The ANSI-SQL (American National Standards Institute) group has published three standards over the years:
SQL89 (SQL1)
SQL92 (SQL2)
SQL99 (SQL3)
The majority of the language has not changed through these updates.
The SQL standard from ANSI is considered the "pure" SQL and called ANSI-SQL.

4. SQL – Enhanced features
Every DBMS vendor wants their products to be different. So most products offers extra features, these additions are generally not compatible with competitor's SQL products.
It is always safest to stick with pure SQL
The enhancements are not all bad because these extensions are very useful.
For example, most DBMS sold today have an automatic way to assign a serial number feature since serial numbering is so common. However, the method of implementation is not uniform.

5. What is a View?
In SQL, a VIEW is a virtual relation based on the result-set of a SELECT statement.
A view contains rows and columns, just like a real table. The fields in a view are fields from one or more real tables in the database. In some cases, we can modify a view and present the data as if the data were coming from a single table.
Syntax:
CREATE VIEW view_name AS
SELECT column_name(s)
FROM table_name
WHERE condition

6. SQL – Relations, Tables & Views
When we say Relation, it could be a Table or a View. There are three kind of relations:
Stored relations tables
We sometimes use the term “base relation” or “base table”
Virtual relations views
Temporary results

7. SQL – Create View
Example: Create a view with title and year and made by Paramount studio.
Movie (title, year, length, inColor, studioName, producerC#)
CREATE VIEW ParamountMovie AS
SELECT title,year
FROM Movie
WHERE studioName = ‘Paramount’;

8. SQL – Querying View
A view could be used from inside a query, a stored procedure, or from inside another view. By adding functions, joins, etc., to a view, it allows us to present exactly the data we want to the user.
SELECT title
FROM ParamountMovie
WHERE year = ‘1979’;
Have same result as
FROM Movie
WHERE studioName = ‘Paramount’ AND year = ‘1979’;
View
Table

9. SQL - Querying View con’t
Query involving both view and table
SELECT DISTINCT starName
FROM ParamountMovie, StarsIn
WHERE title = movieTitle AND year = movieYear;
View
Table

10. SQL - Querying View example
Movie (title, year, length, inColor, studioName, producerC#)
MovieExec (name, address, cert#, netWorth)
CREATE VIEW MovieProd AS
SELECT title, name
FROM Movie, MovieExec
WHERE producerC# = cert#;
SELECT name
FROM MovieProd
WHERE title = ‘Gone With the Wind’;
Same result as query from tables
WHERE producerC# = cert# AND title = ‘The War Of the World’;

11. SQL - Renaming Attributes in View
Sometime, we might want to distinguish attributes by giving the different name.
CREATE VIEW MovieProd (movieTitle, prodName) AS
SELECT title, name
FROM Movie, MovieExec
WHERE producerC# = cert#;

12. SQL - Modifying View
When we modify a view, we actually modify a table through a view. Many views are not updateable. Here are rules have been defined in SQL for updateable views:
selecting (SELECT not SELECT DISTINCT) some attributes from one relation R (which may itself be an updateable view)
The WHERE clause must not involve R in a subquery.
The list in the SELECT clause must include enough attributes that will allow us to insert tuples into the view as well as table. All other attributes will be filled out with NULL or the proper default values.

13. SQL – Modifying View (INSERT)
INSERT INTO ParamountMovie
VALUES (‘Star Trek’, 1979);
To make the view ParamountMovie updateable, we need to add attribute studioName to it’s SELECT clause because it makes more sense if the studioName is Paramount instead of NULL.
CREATE VIEW ParamountMovie AS
SELECT studioName, title, year
FROM Movie
WHERE studioName = ‘Paramount’;
Then
VALUES (‘Paramount’, ‘Star Trek’, 1979);
Title year length inColor studioName producerC#
‘Star Trek’ NULL ‘Paramount’ NULL

14. SQL - Modifying View (DELETE)
Suppose we wish to delete all movies with “Trek” in their title from the updateable view ParamountMovie.
DELETE FROM ParamountMovie
WHERE title LIKE ‘%Trek%’;
It is turned into the base table delete
DELETE FROM Movie
WHERE title LIKE ‘%Trek%’ AND studioName = ‘Paramount’;

15. SQL - Modifying View (UPDATE)
UPDATE from an updateable view
UPDATE ParamountMovie
SET year = 1979
WHERE title = ‘Star Trek the Movie’;
It is turned into the base table update
UPDATE Movie
WHERE title = ‘Star Trek the Movie’ AND studioName = ‘Paramount’;

16. SQL – View (DROP)
DROP view: All views can be dropped, whether or not the view is updateable.
DROP VIEW ParamountMovie;
DROP VIEW does not affect any tuples of the underlying relation (table) Movie.
However, DROP TABLE will delete the table and also make the view ParamountMovie unusable.
DROP TABLE Movie

17. SQL - Download MySQL
Go to and download:
MySQL (Windows User / version a, alpha has bug that keep shutting down the service)
MySQL Administrator
MySQL Query Browser

18. SQL – Install MySQL During the installation –
you can <“Skip Sing-Up”> to fast installation
Will run Configuration Wizard right after installation automatically
If the service won’t start, press <cancel>, then run Configuration Wizard manually again
Run MySQL Server Instance Config Wizard from windows menu –
use default setting unless you know what you are doing
Modify Security Setting (option: you can start service without doing this)
Execute
If there is an error, try press <back> to go back, then press <next> to <execute> again
TCP / IP Networking –
Try different port number if you are using networking.

19. SQL - MySQL Administrator
MySQL Administrator come with MySQL System Tray Monitor allow you to configure your server
Run MySQL Administrator –
For the first time, you may not have “Stored connection,” you can <Add new Connection> and give the Connection name.
Server Host: type “localhost” If you don’t use networking

20. SQL - MySQL Query Browser
Run MySQL Query Browser
Give a name for the Default Schema
Schema means Database instance
You can type command line into the top box or right Click on schemata to create new table

21. SQL - Bibliography
First Course In Database Systems, Jeffery D. Ullman and Jennifer Widom,1997 Prentice Hall, Inc.