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This is called a multivalued attribute.

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Using UML Multiplicity for multivalued attributes In UML, Lookin can again use the multiplicity notation to show that a contact may have more than one value for hobby.

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Contact hobbies relation scheme. To uniquely identify each row of the table, we need to know both which contact this hobby belongs to and which hobby it is—so both attributes form the pk of the scheme. The problem with this de is that it is now difficult but possible to search the table for any particular hobby that a person might have, and it is impossible to create a query that will individually list the hobbies that are shown in the table.

Instead, we will model it using its own relation scheme. The relationship between Contacts and Hobbies is one-to-many, so we create the usual pk-fk pair.

The new scheme has only one descriptive attribute, the hobby name. Instead, we will model it using its own relation scheme.

Using UML Multiplicity for multivalued attributes In UML, we can again use the multiplicity notation to show that a contact may have more than one value Talented Reno seeks delicious mature hobby. The problem with this de is that it is now difficult but possible to search the table for any particular hobby that a person might have, and it is impossible to create a query that will individually list the hobbies that are shown in the table.

The relationship between Contacts and Hobbies is one-to-many, so we create the usual pk-fk pair.

Looking for a bday fk

This is called a multivalued attribute. It can also be ed to Contacts on matching pk-fk contactID pairs, re-creating the original data in a form that we can now conveniently use for queries.

The new scheme has only one descriptive attribute, the Looming name. With data entered, the new table looks similar to the Phones. Thus, we remove the old hobbies attribute and create a new scheme, very similar to the one that we created for phone s in the repeated attribute de pattern.

Looking for a bday fk

Contact hobbies relation scheme. To uniquely identify each row of the table, we need to know both which contact this hobby belongs to and which hobby it Married housewives wants nsa Kennewick both attributes form the pk of the scheme. Thus, we remove the old hobbies attribute and create a new scheme, very similar to the one that dor created for phone s in the repeated attribute de pattern.

Looking for a bday fk

It can also be ed to Contacts on matching pk-fk contactID pairs, re-creating the original data in a form that we can now conveniently use for queries. This is called a multivalued attribute.

With data entered, the new table looks similar to the Phones.