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1. Identify and discuss the serious data redundancy problems exhibited by the file structure shown in Figure. (The file is meant to be used as a teacher class assignment schedule. One of the many problems with data redundancy is the likely occurrence of data inconsistencies-two different initials have been entered for the teacher named Maria Cordon.)
2. Given the file structure shown in Figure, what problem(s) might you encounter if building KOM were deleted?
Describe the entity-relationship model. How are entities, relationships, and attributes represented in this model? What is a composite entity? Describe the approach to diagrams that uses a crow's foot.
You are to design a prototype for a hospital management system. Design a data model for this system, Convert the data model to a set of virtual windows.
There are many kinds of relationships in a design model of a database. Why is it important to classify each of these types in an ERD Model?
Create a state transition diagram that describes typical student states and how they change based on specific actions and events.
Create a database for Ray. He is interested in movies and wants to keep information on movies, actors, and directors in a database. The only user is Ray, and he needs to produce reports.
Implement that entity as a database table with two subtypes, Games and Movie.
Design a dimensional model for analysing Purchases for Adventure Works Cycles and implement it as cubes using SQL Server Analysis Services. The AdventureWorks OLTP sample database is the data source for you BI analysis.
Your task is to develop a database to support this activity.Here is what you need to be able to provide Custom Auto Body in order to land your first consulting contract:
Calculate a canonical cover for above set of functional dependencies (show each step of your derivation with an explanation).
From information system point of view, we should take the key functions of organization and map them to strategic information. Do your companies follow this process or are steps skipped?
Pharmacy systems today are more efficient and user friendly when compared to the systems 20 years ago.
Transform the tables into one or more tables in BCNF. State the primary keys, candidate keys, and referential integrity constraints.
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