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Show the unix/linux commands that you would use to create a 7x7 matrix of alternating entries of 1's and 0's. It should look like this: 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
Commands available for use:
ps
tail
sort
cat
grep
head
yes
fmt
Write SQL statement which creates stored procedure with one int input parameter. The stored procedure selects the supplierId field and the total of all Count field values for each group of supplierId's from the Part table.
Write a PL/SQ block - Select the average salary of all employees in department number 20.
Write SQL statements to create the above tables using SQL DDL statements. Write an INSERT statement to add two new records to each table.
Write down SQL needed to create employee table containing the following data: employeeID, text, length of 5, primary key lastName, text, length of 25
Create a trigger named Products_UPDATE. This trigger should insert the old data about the product into the ProductsAudit table after the row is updated. Then, test this trigger with an appropriate UPDATE statement.
Explain how you will go about developing this database. Provide at least four queries that answer some of the questions asked by the end users.
Use the script below to create an updateable view named balance_due_view. Then, create and test an INSTEAD OF trigger named invoices_instead_of_insert that lets the user update the columns in the view by directly updating the Invoices table.
Describe the meaning of the keyword EXISTS. Describe how any and all relate to EXISTS and NOT EXISTS. Write a query which will display names of any customers who are interested in all artists.
Write the command to list all the employees hired in 2003 and 2004. Sort the rows by the hire_date column in descending order.
List the employee_id and employee_name of the employees form the l_employees table with the top 4 credit limits.
Write a perl subroutine for temperature conversion named 'convert_temp'. It should be able to handle both Fahrenheit to Celsius conversions as well as Celsius to Fahrenheit conversions.
Draw an Entity-Relationship Diagram (ERD) for the data storage requirements of a business described in the case study and Data Model Transformation.
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