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As an external consultant, you have been hired by Overstock.com to evaluate the effectiveness of the processes they undertook in implementing its ERP system and to present your evaluation in report format to the CEO Patrick Byrne. You have been asked to use the format given in the file, Analyzing a Case Study.
Attachment:- Assignment.rar
Construct a scenario leading to the worst-case performance of the FIFO buffer replacement policy - determine if it is conflict serializable or not
Several times, database triggers are utilized to record logins by users. Here is the example of login trigger that inserts row into table every time a user connects.
Express given five loosely described problems carefully in { Instance, Question } form as utilized in "Computers and Intractability". Determine that a list of n numbers has no duplicates.
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.
Database Questions: What do you mean by data base scheme? What do you mean by cardinality ratio? What do you mean by degree of relation?
A university library database records information about books; for each book, it records the book isbn number (which is unique), and the book name. In addition, it records which books have been checked out
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.
Based on the information in the Bike Mania case study, use a suitable CASE tool or drawing package to draw up a set of diagrams showing the current physical view of the systemusing the unified modeling language (UML 2.0) notation
Identify and discuss the serious data redundancy problems exhibited by the file structure shown in Figure and looking at the EMP_NAME and EMP_PHONE contents in Figure, what change(s) would you recommend?
Transform the tables into one or more tables in BCNF. State the primary keys, candidate keys, and referential integrity constraints.
A distributed database management system (DDBMS) stores a logically related database over two or more physically distinct locations connected by a computer network.
Write SQL statements that do the following: Calculate the average salary for all employees. Calculate the maximum salaries for exempt and non-exempt employees.
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