ER/Studio - Embarcadero Technologies Product Documentation

USING ER/STUDIO > CREATING AND WORKING WITH DATA MODELS
Role1
Lower
Bound
Role1 Upper
Bound
Role2 Lower
Bound
Role2 Upper
Bound
0 1 1 * This would not be valid in ER/Studio, uses default
One to Zero or More
0 1 0 1 This would not be valid in ER/Studio, uses default
One to Zero or More
0 1 Empty N This would not be valid in ER/Studio, uses default
One to Zero or More
0 1 N Empty This would not be valid in ER/Studio, uses default
One to Zero or More
0 1 N N This would not be valid in ER/Studio, uses default
One to Zero or More
1 1 0 * One to Zero or More
1 1 1 * One to One or More
1 1 0 1 One to Zero or One
1 1 Empty N One to Exactly N
1 1 N Empty One to Exactly N
1 1 N N One to Exactly N
Expected Cardinality in ER/Studio
Empty 0 0 * This would not be valid in ER/Studio, uses default
One to Zero or More
Empty 0 1 * This would not be valid in ER/Studio, uses default
One to Zero or More
Empty 0 0 1 This would not be valid in ER/Studio, uses default
One to Zero or More
Empty 0 Empty N This would not be valid in ER/Studio, uses default
One to Zero or More
Empty 0 N Empty This would not be valid in ER/Studio, uses default
One to Zero or More
Empty 0 N N This would not be valid in ER/Studio, uses default
One to Zero or More
0 0 0 * This would not be valid in ER/Studio, uses default
One to Zero or More
0 0 1 * This would not be valid in ER/Studio, uses default
One to Zero or More
0 0 0 1 This would not be valid in ER/Studio, uses default
One to Zero or More
0 0 Empty N This would not be valid in ER/Studio, uses default
One to Zero or More
0 0 N Empty This would not be valid in ER/Studio, uses default
One to Zero or More
0 0 N N This would not be valid in ER/Studio, uses default
One to Zero or More
1 Empty 0 * One to Zero or More
1 Empty 1 * One to One or More
1 Empty 0 1 One to Zero or One
EMBARCADERO TECHNOLOGIES > ER/STUDIO® 8.0.3 USER GUIDE 52