Answer:
System operators
Explanation:
This is a frontline which ensures the delivery of a reliable electricity to consumers. The duty of a system operator includes the following :manages the power grid from a set of computer console, determines the best combination of generators , investigates, plan and see to the demand and supply of power.
Answer: Here are some reasons why you might send a professional business letter:
1. It will make the recipient trust and respect you more.
2. It shows that you are a good and respectable business person.
3. It shows that you put time and effort into your business dealings no matter how small.
4. It shows that you respect the recipient as sending a professional business letter is harder than simply sending a text.
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Explanation:
Answer:
The procedure in SQL is created as follows
Explanation:
--creating the procedure
CREATE OR REPLACE PROCEDURE prc_inv_amounts (W_IN IN NUMBER)
AS
--defining variables
W_CK NUMBER := 0;
W_SUBT NUMBER := 0;
W_TAX NUMBER := 0;
BEGIN
--Authentication process of the invoice
SELECT COUNT(*) INTO W_CK FROM INVOICE WHERE INV_NUMBER := W_IN;
--Transaction confirmation
IF W_CK = 1 THEN
SELECT SUM(LINE_TOTAL) INTO W_SUBT FROM LINE
WHERE
--checking the invoice for the desired invoice number
LINE.INV_NUMBER = W_IN;
W_TAX :=W_SUBT * 0.08;
--updating the invoice
UPDATE INVOICE
--setting the new values
SET INV_SUBTOTAL = W_SUBT,
INV_TAX = W_TAX,
INV_TOTAL =W_SUBT + W_TAX
WHERE INV_NUMBER = W_IN;
--ending the if statement
END IF;
--ending the procedure
END;
Answer:
JList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION)
Explanation:
JList provides for simultaneous selection of multiple items upon setting the selection mode to MULTIPLE_INTERVAL_SELECTION. The API call for this purpose is:
jlist.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION)
Once the selection mode has been set , we can select set of items in the list as follows:
jlist.setSelectedIndices({1,3,5});
This will select the items with indices 1,3,5 in the list.
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