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1. What is meant by Proactive, Retroactive and Simultaneous Update. 2. What are the different types of JOIN operations?
Give examples of binary 1:N relationships, for (a) an optional-to-optional relationship, (b) an optional-to-mandatory relationship,
imagine that you have been hired as a consultant to assist in streamlining the data processing of an international
Discuss BitCoin. What are they? Who made them? How long have they been around? What is BitCoin Mining? In your opinion, will BitCoins stick around? Why or Why Not?
Design a relational database containing information about the physicians, patients, patient history, patient payment history, and patient medications.
Create an ER diagram for each of the following descriptions: (a) Each company operates four departments, and each department belongs to one company. (b) Each department in part (a) employs one or more employees, and each employee works for one depa..
Develop a RDBMS (Relational Database Management System) in Python. The RDBMS should actually be written in Python, not just interface with some other DBMS. This system should track students: Personal Data, Schedules and Grades. The system should cont..
Indexing can affect the performance of a general-purpose database that has roughly equal numbers of fetches and changes. The decision to add an index can improve the performance of a system but can also degrade it.
What is a relational database-Write a 1500 word essay on the above question. Your response should include the evolution of 1st generation data models
Each book has different ID (also each book of same name and same author (but number of copies) will have different ID), author name and any additional information you think it is important
Each department is described by a name, department code, office number, office phone, and college. Both name and code have unique values for each department.
Give an example of a (plausible) constraint involving one or more of these relations that is not a primary key or foreign key constraint.
To identify the number of employees at the New Book Sales Corporation, you view the records in the Sales Department table.
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