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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. Therefore, you can think the source data include both the operational databasesfor ordering and stores' local databases. After a customer returned a car successfully, the system should create a record for this customer and save the record into the central data warehouse.
It is essential to the business to maintain qualified data in the data warehouse. Therefore, you are required to design an ETL process for this question. You are required to decide an application (ETL or ELT) first and then discuss the advantages and/or disadvantages of your proposed application . You also need to define ETL functions to clearly understand what data the data warehouse has and what data the data warehouse does not have.
Generate the view called RepairSummary which shows only RepairInvoiceNumber, TotalCost, and TotalPaid. Illustrate the SQL statement to retrieve all RepairSummary data sorted by TotalCost.
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 a database that implements the proposed data warehouse schema.
Explain efficient algorithm that, provided edge-labeled graph G with distinguished vertex v0 and sequence s = σ1, σ2, ..., σk of characters from Σ, returns path in G which begins at v0.
Describe relationships with the example. Also illustrate degree of relationship for that example. Describe the different operations of relational algebra with suitable example each.
Can Oracle have multiple group functions in the same SELECT list of query (i.e can we do a COUNT and AVG)? Let us assume we wanted to find lowest, highest, average.
To analyse and comprehend a provided ER diagram and Database Schema and implement a database based on the provided ER diagram and Database Schema
To apply and consolidate skills acquired in the requirement and analysis disciplines through analysis of a simple case study, and to express the results through the relevant UML diagrams. ITC203
Create a new table named SportingGoods to contain the columns PartNum, Description, OhHand, Warehouse, and Priced for all rows in which the item class is SG.
Indexing can affect the performance of a general-purpose database that has roughly equal numbers of fetches and changes. The decision to add an index can improve the performance of a system but can also degrade it.
Using your knowledge of the college environment, determine the functional dependencies that exist in the following?
List the names of agents that placed an order for customer C003 or customer C006. List all pair of products names that are in the same city, along with their city name.
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