Network model

The network model was adopted by the CODASYL Data Base Task Group in 1969 and underwent a major update in 1971.

Firstly, IBM chose to stick to the hierarchical model with semi-network extensions in their established products such as IMS and DL/I.

Until the early 1980s the performance benefits of the low-level navigational interfaces offered by hierarchical and network databases were persuasive for many large-scale applications, but as hardware became faster, the extra productivity and flexibility of the relational model led to the gradual obsolescence of the network model in corporate enterprise usage.

The network model's original inventor was Charles Bachman, and it was developed into a standard specification published in 1969 by the Conference on Data Systems Languages (CODASYL) Consortium.

Subsequent work continued into the early 1980s, culminating in an ISO specification, but this had little influence on products.