To work on this task, use the “Labs on Demand Assessment Environment and DVD Database”
found in the Web Links section. In this environment, you will be able to write and test your
PostgreSQL code and access the database to complete this task.
Plan for and compose the sections of a real-world business report that can be created from the
“Labs on Demand Assessment Environment and DVD Database” web link, and demonstrate the
functionality of the supporting SQL code by doing the following:
A. Summarize one real-world written business report that can be created from the DVD Dataset
from the “Labs on Demand Assessment Environment and DVD Database” attachment.
1. Identify the specific fields that will be included in the detailed table and the summary table of
the report.
2. Describe the types of data fields used for the report.
3. Identify at least two specific tables from the given dataset that will provide the data
necessary for the detailed table section and the summary table section of the report.
4. Identify at least one field in the detailed table section that will require a custom
transformation with a user-defined function and explain why it should be transformed (e.g., you
might translate a field with a value of N to No and Y to Yes).
5. Explain the different business uses of the detailed table section and the summary table
section of the report.
6. Explain how frequently your report should be refreshed to remain relevant to stakeholders.
B. Provide original code for functions) in text format that perform the transformation(s) you
identified in part A4.
C. Provide original SQL code in a text format that creates the detailed and summary tables to
hold your report table sections.
D. Provide an original SQL query in a text format that will extract the raw data needed for the
detailed section of your report from the source database.
E. Provide original SQL code in a text format that creates a trigger on the detailed table of the
report that will continually update the summary table as data is added to the detailed table.
F. Provide an original stored procedure in a text format that can be used to refresh the data in
both the detailed table and summary table. The procedure should clear the contents of the
detailed table and summary table and perform the raw data extraction from part D.
1. Identify a relevant job scheduling tool that can be used to automate the stored procedure.
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