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A multinational tour operator agency has gained new business growth in the North American market through the use of social media. Its operation has expanded by 50% within six months and the agency requires an enhanced data management strategy to sustain their business operations. Their existing data repository for its reservation processing system is limited in business intelligence and reporting functionalities. The tour operator seeks a database management specialist to assist them in leveraging their data sources to enable them to forecast and project tour sales appropriately.
Imagine that you have been hired to fulfill their need of enhancing the data repository for their current reservation processing system. Upon reviewing the system, you find that the data structure holds redundant data and that this structure lacks normalization. The database has the following characteristics:
Write a three to four (3-4) page paper in which you propose an enhanced database management strategy. Your proposal should include the following:
Your assignment must follow these formatting requirements:
Using Join, list the items each customer ordered where the billing_price was lower than the item price (item, billing_price, and price). Sort the results alphabetically by customer name.
What problems could be caused by not having appropriate indexes and what problems could be cause by having too many indexes?
Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room - based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?
Prepare the example of table which is in first normal form but not in second normal form and example of a table which is in second normal form but not in third normal form.
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.
Create an update query to select all records in the tblOverPriced, decrease the Price field values by 10%, run and close the query.
Generate the view called RepairSummary which shows only RepairInvoiceNumber, TotalCost, and TotalPaid. Illustrate the SQL statement to retrieve all RepairSummary data sorted by TotalCost.
One of the tenets of database development is to never permit developers to create or own objects during development. All objects are created by application owner and stored in that schema.
What is the maximum rate at which data can be read from disk, assuming that we can only read data from one surface at a time? What is the average rotational latency?
Find out which data from database to archive; that is, for each table, Write down whether data requires to be archived.
Integrity constraint prevent from happening when data is inserted in table which contains this constraint? Let INSERT, UPDATE, and DELETE actions on both child and the parent.
Create and submit a screenshot of your database diagram based on the tables, and generate the data definition language (DDL) for each table.
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