ЛБ1
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1
1.1
:
SQL - 
.
1.3 
Windows 
Linux 
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.
1.4.
-
-
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http://localhost/phpmyadmin.
1.1.
1 - 
1.2).
1.2 - 
1.4.2 
)>
[NOT NULL UNIQUE],...,
...)
- 
- 
-NOT NULL - 
-
-UNIQUE - 
;
-PRIMARY KEY - 
-
- 
;
- FO
- 
1.4.3 
CREATE TABLE authors (au_id INT,
author VARCHAR(25) NOT NULL, PRIMARY KEY(au_id));
CREATE TABLE publishers (pub_id INT, publisher VARCHAR(255) NOT NULL,
url VARCHAR(255), PRIMARY KEY(pub_id)); CREATE TABLE titles (title_id INT,
title VARCHAR(255) NOT NULL, yearpub INT, pub_id INT,
PRIMARY KEY(title_id), CONSTRAINT a1
FOREIGN KEY (pub_id) REFERENCES publishers(pub_id));
CREATE TABLE titleautors (au_id INT, title_id INT,
CONSTRAINT a2 FOREIGN KEY (au_id) REFERENCES authors(au_id), CONSTRAINT a3 FOREIGN KEY (title_id) REFERENCES titles(title_id));
CREATE TABLE wwwsites (site_id INT,
site VARCHAR(255) NOT NULL, url VARCHAR(255),
PRIMARY KEY(site_id));
CREATE TABLE wwwsiteauthors (au_id INT, site_id INT, CONSTRAINT a4 FOREIGN KEY (au_id) REFERENCES authors(au_id),
CONSTRAINT a5 FOREIGN KEY (site_id) REFERENCES wwwsites(site_id));
1.3.
1.3 - 
1.4.4 
TABLE: DROP TABLE <
>.
" 
DROP TABLE titleautors.
1.4.5 
1.1.
1.
1.
A
2.
3.
4.
REFER
5. |
ALTER TABLE < |
> DROP FOREIGN KEY (< |
".
1.4.6 publishers
1. 
- 
:
CREATE TABLE spr_publisher (publisher VARCHAR(255),
address VARCHAR(150), PRIMARY KEY (publisher)).
2. 
ALTER TABLE publishers ADD CONSTRAINT a6 FOREIGN KEY (publisher) REFERENCES spr_publisher (publisher); 
- 
.
publications2. titleautors
au_id: int(11) 
title_id: int(11)
publications2. titles
title _id: int(11) title: varchar(255) yearpub: int{11) pub_id: int(11)
Publications2.authors |
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au_id: int(11) |
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publications2. |
author: varchar(25) |
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wwwsiteauthors |
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au_id: int(11) |
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site_id: int(11 |
publications2. wwwsites site_id: int(11)
site: varchar(255) url: varchar(255)
publications2.publishers |
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publications2.spr_publisher |
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pub_id: int(11) |
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publisher: varchar(255) |
publisher: varchar(255) |
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address: varchar(150) |
url: varchar(255) |
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||
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1.4 - 
1.4.7 
MySQL
ySQL
1.2.
1.2 
MySQL
1 |
2 |
3 |
|
TINYINT
SMALLINT
MEDIUMINT
INT 
INTEGER
BIGINT
FLOAT
DOUBLE,
REAL
DECIMAL, NUMERIC
- 
3 
.
4 
-
-
+9223372036854775807.
4
-
-1.175494351E-38.
8
-
1.7976931348623157E + 308 
2.2250738585072014E-308.
-
DECIMAL - 
DOUBLE.
N
CHAR
VARCHAR
DATE
TIME
YEAR
ENUM
-
-
-
-
3
-01-
-12-
-MM-
-
-
3 |
- |
1
- 
-
-
. 
-
1.6 |
E |
1.2).
POST (NP int, IMIA char(30), ADRES char(50))
-NP - 
;
-IMIA - 
.
DETAL (ND char(3), NAIM char(25), MATER char(30), CENA float (5,2))
-ND - 
;
-NAIM, MATER - 
POSTKA (NP int, ND char(3), KOL int)
-NP, ND - 
;
-NP - 
;
-ND - 
;
-KOL - 
.
DETAL - POSTKA (1:M)
POST - POSTKA (1:M).
1.6
:
- 
|
1. |
- |
; |
- |
|
1.
SP_MATER;
- 
SP_MATER (NM char(3), NAZVANIE char(30))
NM - 
NAZVANIE - 
1.6.3 
- 
- 
SP_ADRES - 
1.
1.2)
- 
SP_ADRES (ADRES char(50))
ADRES - 
SP_ADRES - POST (1:M) 1.6.4 
-
-
-
;
- 
POSTKA
NP 
ND 
KOL 
1 |
10 |
1 |
25 |
1 |
48 |
1 |
8 |
1 |
32 |
1 |
25 |
1 |
13 |
1 |
7 |
2 |
17 |
2 |
17 |
2 |
25 |
3 |
16 |
3 |
52 |
3 |
9 |
4 |
40 |
4 |
67 |
5 |
173 |
5 |
13 |
6 |
41 |
6 |
52 |
;
POSTKA.
|
DETAL |
|
ND |
NAIM MATER |
CENA |
|
M1 |
1,25 |
|
M2 |
3 |
|
M2 |
2,25 |
|
M2 |
20,6 |
|
M2 |
1,87 |
|
M1 |
2,5 |
|
M2 |
5,2 |
|
M3 |
10,57 |
POST
NP IMIA 
ADRES
1
2 3
4 5
6 
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