Construct a corresponding application program view of data given a program specification block. Discuss the necessity of logical structures in the hierarchical model. Logical pointers Explain the purpose of logical pointers. Explain redundant data elimination using logical structures. Describe a network data model.
Task group Explain the implications of database task group in relation to the network model.
Logical structures State the relationship between a network schema and the corresponding data structure. Models Compare and contrast hierarchical and network models. Describe a relational data model. Decomposition Represent the data from hierarchical and network models using the relational model. Define the terminology associated with direct access storage devices.