List four significant differences between a file-processing system and a DBMS.
Answer to relevant QuestionsThis chapter has described severalmajor advantages of a database system.What are two disadvantages?Consider a two-dimensional integer array of size n × m that is to be used in your favorite programming language. Using the array as an example, illustrate the difference (a) Between the three levels of data abstraction, and ...Construct appropriate tables for each of the E-R diagrams in Exercises 2.2 to 2.4.When designing an E-R diagram for a particular enterprise, you have several alternatives from which to choose.a. What criteria should you consider in making the appropriate choice?b. Design three alternative E-R diagrams to ...Figure shows a lattice structure of generalization and specialization. For entity sets A, B, and C, explains how attributes are inherited from the higherlevel entity sets X and Y. Discuss how to handle a case where an ...
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