Question 4 please. 4. Differentiate between object-oriented database, relational

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Question 4 please.

4. Differentiate between object-oriented database, relational database hierarchical database, and network database by fully describing these. 5. Evaluate data standards by describing what they are and discussing why these are important when utilizing computers in healthcare. 6. What is the purpose of natural language queries? Provide at least two examples of how it might be utilized in healthcare Explain why data dictionary is important in the development of a database by providing at least one example of how a database developed without a data dictionary can fail. 7.

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Question 4

Hierarchical database Network database relational database Object Oriented Data Base Data arranged in a tree structure Data arranged in a tree structure but network orientation Data arranged in tabular fashion Data represented in the form of objects This is 2nd generation database This is 2nd generation database This is 3rd generation database This is 4th generation database One parent many children 1:M A children has more than one parent M:M 1:1, 1:M and M:M 1:1, 1:M and M:M It is inflexible,because if you want any change we have to keep hierarchy,So requires carefull design It is inflexible,because if you want any change we have to keep hierarchy,So requires carefull design Flexible,represent using tables and key reference to get data,so modification is easy and independent. Flexible,Design using modules,so any modification needed only change that portion other than design Using Linked list with pointers to navigate through parent child Use series of linked list,each record has it's own linkedlist keys are used to link data different ways. Inter reletionship and reusability of objects to maintain data 1:M relational mapping is easy to develop Better job with M:M ,fast and efficient storage Values are atomic,rows are unique and columns are same kind and maintain redundancy Persistence,secondary storage management,concurrency and recovery are efficient Data classification using segments Data classification using segments for each Data classification using fields dataclassification using classes and objects Now a days,limited usage(ex,windows file system) Limited usage(Satelite communication) Most popular(Technical development,web servicing) Gaining popularity(New developments)

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