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Entity-Relationship (ER) Model
Composite and multi-valued attributes can be nested to any number of levels.
Suppose we want to design an attribute for a STUDENT entity type to keep track of previous college education. Such an attribute will have one entry for each college previously attended, and this entry is composed of: college name, start and end dates, degree entries (degrees awarded at 2 that college, if any), and transcript entries (courses completed at that college, if any). Each degree entry is formed of degree name and the month and year it was awarded, and each transcript entry is formed of a course name, semester, year, and grade. Design an attribute using the General notations to hold this information.
Which field or fields cause a table to no longer be in third normal form? In which normal form is denormalized table?
Identify each relationship type and write all of the business rules and create the bask Crow's Foot ERD for DealCo.
Assume the data warehousing system is centralized, and implemented in the environment of Microsoft SQL Server 2012. As we discussed in the introduction, each store has its own local database.
Use the results of the transcripts of an interview with IT consultant. Prepare a Fully Attributed Data Model. Add the data attributes for each entity."
For each of these statements, include a screenshot of the SQL. Make sure to include the statement execution, including the resulting data. Display all columns and all rows from the Employees table.
The packing list describes the ideal contents of each package, but it is not always possible to include the ideal number of each item. Therefore, the actual items included in each package should be tracked. A package can contain many different ite..
Create a report which identifies five most expensive bicycles. The report must list bicycles in descending order from most expensive to lease expensive, the quantity on hand for each, and the markup percentage for each.
supplies % of votes each candidate is likely to receive, based on popularity rating. Actual number of votes received is that percentage of General votes. You should enter data for each candidate in each of the eight constituencies.
Pick one of the different types of SQL statements (data definition language, data manipulation language, or data control language). Describe how that type of statement is use.
Using the descriptions of the attributes given in the, convert the ERD shown in Figure P6.2 into a dependency diagram that is in 3NF.
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..
Write down the SQL code in order to carrying out the following requests. Display all the data in each of the four tables. Do not display the foreign key columns.
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