Visualizing Complexity Essay Example | Topics and Well Written Essays - 500 words

Visualizing Complexity - Essay ExampleThe record types are organised in the form of a rooted tree. However, in network model, multiple branches emanate from a single or more nodes (Lima 86). It can be likened to several trees sharing branches.Consequently, the vertical model can be said to support one-one relationships and one-to-many relations in contrast to the network information model that supports many to many relationships. The hierarchical model supports a data structure whereby there is a parent- churl relationship in contrast to the network model whereby a record can chip in many parents as well as many children.Whereas the network model uses CODASYL the hierarchical model is not a provider of any independent, stand-alone examination interface. The commonality among the models, the hierarchical model and network database model is that in both of them retrieve algorithms are complex and systematic (Lima 109).The hierarchical data model has an launching a normally whereby one cannot retrieve information on a child who has no parent in contrast to the network model that has no anomalies. In addition, the network model is free from update anomalies as a result of a single occurrence in each set. The hierarchical data model, however, has multiple occurrences of child records, which causes inconsistency problems during the update operations.In hierarchical model, data integrity is based on parent-child relationship and the undercut of parent results. In the deletion of child records, the network model is free from all the deletion anomalies because information is stored in a different table, which further enhances its efficiency.In the network database model, a child entity can have many parents and can be visualised as several inverted trees interconnected by branches contrary to the single inverted trees characterised by branches in the hierarchical model.Folksonomy refers to a classification system derived from the methodology and practise of collab oratively, creating,