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What is Network DBMS

Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 Uma asked over 2 years ago

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5 Answers
Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 veeru answered about 2 years ago

In our DBMS language, we can say that a parent can have many children and a child can have more than one parent. So a Network DBMS will have many-to-many relationship. There are some differences between hierarchical DBMS and Network DBMS.

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Picsjoin 2017224123730582 Archana answered over 2 years ago

Hie Uma, - The network model is a database model conceived as a flexible way of representing objects and their relationships. - Its distinguishing feature is that the schema, viewed as a graph in which object types are nodes and relationship types are arcs, is not restricted to being a hierarchy or lattice

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Open uri20170510 32134 1uwcnoc?1494421631 Shubhangi Jain answered over 2 years ago

A **DBMS is said to be Network DBMS**, when it organizes the data in a network structure. As you all are aware that, a network may have as many connections as it can. In our DBMS language, we can say that a parent can have many children and a child can have more than one parent. So a Network DBMS will have many-to-many relationship. There are some differences between hierarchical DBMS and Network DBMS. - In hierarchical DBMS, we can have only one parent to a child. But in Network, we can have more than one. - Unlike hierarchical , Network DBMS does not necessarily follow downward tree structure. In some cases it may follow upward tree structure. Please go through the below example to understand better. Network DBMS ABC College has two Child. i.e. Department A and College library. It represents **one to many relationship**. Even though there is no relation between Department A and College library, a student can be a member of both Department A and College library. This represents **many to one relationship**. So as per the above example, student has two parents which tell us this is the Network DBMS model. This is the simple and good example for Network DBMS.

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Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 Aarti Vadnerkar answered over 2 years ago

The network model is a database model conceived as a flexible way of representing objects and their relationships. Its distinguishing feature is that the schema, viewed as a graph in which object types are nodes and relationship types are arcs, is not restricted to being a hierarchy or lattice.

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Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 lochan answered over 2 years ago

A DBMS is said to be a Network DBMS if the relationships among data in the database are of type many-to many. The relationships among many-to-many appear in the form of a network. Thus the structure of a network database is extremely complicated because of these many-to-many relationships in which one record can be used as a key of the entire database. A network database is structured in the form of a graph that is also a data structure. Though the structure of such a DBMS is highly complicated however it has two basic elements i.e. records and sets to designate many-to-many relationships. Mainly high-level languages such as Pascal, COBOL and FORTRAN etc. were used to implement the records and set structures. Thanks

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