What is one to one relationship?

Answer 1

There are three types of relationship in a database . One to one, one to many and many to many , Example of many to many relationship is relation between teachers and students, n teachers can have m students.

Answer 2

When one parent entity contains several child entities, this type of relationship is referred to as a one-to-many. An example of such a relationship is a Customer entity contains several Orders and each Order in trun contains many Order Items.

Answer 3

A one-to-one relationship in a database implies that for one occurrence of a parent entity, there is one and only one child table entry. Note that the one-to-one relationship may be tagged as 0 or 1 occurrence on the child table meaning it is not mandatory to have the child entity, but if it does then there can only be one entry.

Answer 4

a person who has relastion with more than one person? this is way std's and aids are killing off man kind

Answer 5

It can be a problem when you find yourself entering another relationship when you already in one and then can be hard to keep up to make Thoose two people happy and satisfied

Answer 6

In database there can be three types of relation between entities. One to one, One to many and many to many. In many to many relation n entity can be related to m entity.