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Suppose you are given a relation R with four attributes ABCD. For each of the following sets of FDs, assuming those are the only dependencies that hold for R, do the following: (a) Identify the candidate key(s) for R. (b) Identify the best normal form that R satisfies (1NF, 2NF, 3NF, or BCNF). (c) If R is not in BCNF, decompose it into a set of BCNF relations that preserve the dependencies.1. C → D, C → A, B → C2. B → C, D → A3. ABC → D, D → A4. A → B, BC → D, A → C5. AB → C, AB → D, C → A, D → B
Suitable data that suits your requirement and design and explain the 3- schema architecture for the requirement.
Illustrate relational algebra expressions for names of all salespeople, names of all salespeople having ORDER row and names of salespeople not having ORDER row.
Your topic could come from a sub-problem of a cutting-edge research problem about these techniques (if you want to investigate and solve a technical problem), or a successful (or a planned) implementation in one of the above DBMSs (if you want to ..
List all the business rules for the ABS ( Business rules are important because they define the conditions that the database must meet. For example, every Order must be associated with a valid Product.This prevents invalid Orders being entered into..
Design a work breakdown structure for the task below: Designing the database, Working on the website content
create a spreadsheet to compare the three identified e-commerce hosting sites and the e-commerce hosting site that you find • prepare a PowerPoint presentation that represents the presentation you would give to management explaining your selection..
Design a database for Ray. For each director, list his or her number and name and the year he or she was born. If the director is deceased, list the year of death.
Consider the timing diagram of Figure 12.10 in the 8th edition (or 14.10 in the 9th edition). Assume that there is only a two-stage pipeline (fetch, execute). Redraw the diagram to show how many time units are now required for four instructions.
Webster Library wants to know how many green books it has. Out of the 500 shelves of books, 3 shelves were selected. These shelves hold 150 books each. 54 of the books sampled were green.
Draw a DFD (Context and Level 1) for placing an order based on the E-R diagram shown here.
Describe how to create a query in Access Query Wizard equilvant to the query: SELECT first, last, department, hours FROM payroll WHERE hours>.
Identify two possibly mispriced bond issues, one overpriced and one underpriced. and graph the bond yield to maturity (YTM) on the y-axis of an XY-scatter plot, with the bond to maturity in years on the x-axis.
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