Subject area "art workshop"

Entity Relationship diagram №1

integrity constraints:

abbreviation	integrity constraints
PK	primary key
FK	foreign key
UN	unique
NN	NOT NULL
CH	CHECK
1*	> '1900-01-01'
2*	~ '^[\w.-]+@([\w-]+.)+[\w-]{2,4}$'
3*	>0
4*	BETWEEN 0 AND 100
5*	char_length(contact_phone_num) =12
6*	>=0

Name		Name	Last commit message	Last commit date
Latest commit History 4 Commits
DML.sql		DML.sql
ER-2.puml		ER-2.puml
README.md		README.md
art_workshop.png		art_workshop.png
ddl.sql		ddl.sql
dql.sql		dql.sql
painting.png		painting.png