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What database statistics measurements are typical of environment resources? [removed] a. The logical and physical disk block size [removed] b. The location and size of data files [removed] c. The number of extends per data file [removed] d. All of these choices are correct.

DBMS performance tuning at the server end focuses on setting the parameters used for:

[removed]a. Data cache. 
[removed]b. SQL cache. 
[removed]c. sort cache. 
[removed]d. All of these choices are correct.

Given the following SQL Query, which columns would you recommend to be indexed?SELECT InvoiceNumber, InvoiceDate, Invoice_Total, Invoice_Paid,
Invoice_Total – Invoice_Paid as Balance
FROM Invoice
WHERE Invoice_Date >= “2015-07-20” and Salesman_Id = “JR”
ORDER BY DESC Invoice_TotalDrag the correct answers to one of the three pockets.

                                              invoice Number

                                              Invoice Date




ou work for a large non-profit that raises money for awareness of and research to cure a very painful childhood disease. They have a database table with over 100,000 names, addresses, and basic demographic information about donors to their cause.