1. Data Definition After this lecture, you should be able to:
Use SQL DDL Statement to define a database structure.
Work with mysql or phpMyAdmin to access your MySQL databases.
Complete Assignment 2 (Part II - a, b). 1

2. SQL DDL Statements Create Table create table s (sno char(5), ... );
Drop Table
drop table s;
Alter Table
alter table s add phone char(13);
Create View
create view SV as select ....
Drop View
drop view SV;
Create Index
create index X on s(sno);
Drop Index
drop index X;

3. Suppliers-Parts Database: E-R Diagram
sno
(key)
pno
(key)
sname
pname SP M S M P
city
status
city
qty
color
weight

4. Supplier-Part Database
Table S Table P
sno | sname | status | city pno | pname | color | weight | city
s1 | Smith | | London p1 | nut | red | | London
s2 | Jones | | Paris p2 | bolt | green | | Paris
s3 | Blake | | Paris p3 | screw | blue | | Rome
s4 | Clark | | London p4 | screw | red | | London
s5 | Adams | | Athens p5 | cam | blue | | Paris
p6 | cog | red | | London
Table SP
sno | pno | qty
s1 | p1 | 300
s1 | p2 | 200
s1 | p3 | 400
s1 | p4 | 200
s1 | p5 | 100
s1 | p6 | 100
s2 | p1 | 300
s2 | p2 | 400
s3 | p2 | 200
s4 | p2 | 200
s4 | p4 | 300
s4 | p5 | 400

5. Create Table Statements
sno char(5) not null,
sname char(20) not null,
status smallint,
city char(15),
primary key (sno) );
create table p (
pno char(6) not null,
pname char(20) not null,
color char(6),
weight smallint,
primary key (pno)
create table sp (
qty integer not null,
primary key (sno, pno)

6. Data Types
integer
The magnitude range is -2,147,484, ,147,484,647.
real
For fixed or floating-point numbers.
Allowable values are E+38 to E-38, 0,
and E-38 to E+38.
char
For fixed length character strings up to 255 bytes.
varchar
For variable-length character strings.
The maximum length is 65,532 bytes.
bit[n]
n indicates the number of bits, from 1 to 64. The default is 1 if n is
omitted .
date
Year values in the range are converted to
Year values in the range are converted to
datetime
Date and time. The format is ‘YYYY-MM-DD HH:MM:SS’.

7. Creating S-P-SP Database
% mysql –h mysql.cs.orst.edu –u pham –p pham
Enter password:
mysql> \. create_s_p_sp.sql;
Query OK, 0 rows affected (0.01 sec)
SQL> show tables;
TABLE_in_pham p s sp

8. Looking at Table Structures
mysql> desc s;
Name Null? Type
SNO NOT NULL CHAR(5)
SNAME NOT NULL CHAR(20)
STATUS SMALLINT(6)
CITY CHAR(15)
mysql> desc p;
Name Null? Type
PNO NOT NULL CHAR(6)
PNAME NOT NULL CHAR(20)
COLOR CHAR(6)
WEIGHT SMALLINT(6)

9. Adding Data to a Table insert into s
values('s1', 'Smith', 20, 'London');
values('s2', 'Jones', 10, 'Paris');
values('s3', 'Blake', 30, 'Paris');
values('s4', 'Clark', 20, 'London');
values('s5', 'Adams', 30, 'Athens');
mysql> \. insert_s_p_sp.sql
Query OK, 0 rows affected (0.01 sec)

10. Showing Table Contents
SQL> select * from s;
SNO SNAME STATUS CITY
s1 Smith London
s2 Jones Paris
s3 Blake Paris
s4 Clark London
s5 Adams Athens
SQL> select * from p;
PNO PNAME COLOR WEIGHT CITY
p1 nut red London
p2 bolt green Paris
p3 screw blue Rome
p4 screw red London
p5 cam blue Paris
p6 cog red London

11. Sailors-Boats Database: E-R Diagram (Schema)
sid
(key)
sname
bid
(key)
bname
Reserves
Sailor M M
Boat
date
rating
age
color 4

12. Create Table Statements
create table sailors (
sid integer not null,
sname char(20) not null,
rating smallint,
age real,
primary key (sid) );
create table boats (
bid integer not null,
bname char(20) not null,
color char(10),
primary key (bid)
create table reserves (
sid integer not null,
day date not null,
primary key (sid, bid, day)

13. Sailors-Boats Database: Tables
sid
sname
rating
age 22
Dustin 7
45.0 33
Libber 8
55.5
Boats
bid
bname
color 2
Yuppy
Blue 3
Lubber
Red
Reserves
sid
bid
day 22 2
10/10/96 3
10/09/96 33
11/12/96