$.$ For each E$-$R model symbol draw and give example for each.Symbol

Meaning

Entity

Weak Entity

Indentifying Relationship

Attribute

Key Attribute

Multivalued Attribute

Composite Attribute

Derived Attribute

Total Participation of $E_2$ in $R$

Cardinality Ratio $1$: $N$ for $E_1$:$E_2$ in $R$

Structural Constraint $($min$,$ max$)$

on Participation of $E$ in $R$

Figure $3\mathrm{.}14$

Summary of the

notation for ER

diagrams.

Relationship