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ERML
GitHub
document
Library ERD
cog
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ENTITY
User {
PRIMARY
"ID"
,
SIMPLE
"DoB"
,
DERIVED
"Age"
}
WEAK
ENTITY
Book
OWNER
User {
PARTIAL
"Name"
}
IDEN
REL
Borrow {
User <
PARTIAL
,
1
>,
Book <
TOTAL
,
N
>,
ATTRIBUTES
{
SIMPLE
"Borrowing_date"
}
}
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1
N
User
ID
DoB
Age
Book
Name
Borrow
Borrowing_date