Definition

1-1(one-to-one), One-to-many (1-M), Many-to-Many (M-M)

1-1(one-to-one) is a relationship between two entities.

One-t- Many (1-M) is a relationship in which each node can have only one parent, but can have multiple children, that means an entity can have multiple relationships with other entitles in the database.

Many-to-many (M-M) is a relationship in which a record can have multiple parents and multiple children (every entity can be related to a number of entities).

Share it:  Cite

More from this Section

  • Interorganizational systems (IOS)
    Systems shared by two or more companies, in the spirit of cooperation and collaboration ...
  • Relational model
    Relational model is the third type of data model in which data is represented using two-dimensional ...
  • Mixed Chaining
    Mixed Chaining refers to the use of both forward chaining and backward chaining to solve ...
  • Robots
    Robots are reprogrammable machines that are capable of human-like tactile perception and ...
  • Super computers
    Super computers are the fastest and largest computers available today, with large memories, ...