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Savatey [412]
3 years ago
12

Show a parse tree and a leftmost derivation for : B = C * (A + B)

Computers and Technology
1 answer:
11111nata11111 [884]3 years ago
7 0

Answer:

mhyfocnu,sobgu,kvngwugwe8hri

Explanation:

sovijbjxyzkuvcg

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Uni code is short for universal code , it was created so that all countries could communicate together without the need for special encoding for each country
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The __________ endian storage format places the __________ byte of a word in the lowest memory address. The __________ endian st
mr Goodwill [35]

Answer:

i. Big

ii. most significant

iii. little

iv. most significant

Explanation:

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3 years ago
Can somebody help me with this question?
Vaselesa [24]


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8 0
3 years ago
Write a SELECT statement that returns one row for each customer that has orders with these columns:
d1i1m1o1n [39]

Answer:

SELECT email_address,

SUM(item_price * Quantity) AS item_price_total,

SUM(discount_amount * Quantity) AS discount_amount_total

FROM Customers c

JOIN Orders o ON c.CustomerID = o.CustomerID

JOIN Order_Items oi ON o.OrderID = oi.OrderID

GROUP BY email_address

ORDER BY item_price_total DESC

Explanation:

In this SQL statement the SELECT statement selects the following columns:

email_address

item_price

Quantity

discount_amount

There are two tables Customers and Order_Items

SUM aggregate function is used to add the values of the product of the columns discount_amount and Quantity. It is also used to get the sum of the product of two columns discount_amount and Quantity.

A new temporary column named item_price_total is used to name the sum of the product of two columns discount_amount and Quantity using AS which is ALIAS and it is used to give a name to some columns or a table.

Similarly discount_amount_total name is given to the column which calculate the sum of the product of two columns i.e. discount_amount and Quantity.

JOIN is used here to join the columns from the tables Order_items and Customers.

GROUP BY is used to group the result of rows and is used with functions like SUM. Here the rows are grouped by the email address.

ORDER BY is used to order the result. Here the result is ordered by item_price_total in descending  order.

This SELECT statement can also be written as following:

SELECT c.email_address,

SUM(o.item_price * o.Quantity),

SUM(o.discount_amount * o.quantity)

FROM customer c

JOIN Order_Items o ON o.id = c.id

GROUP BY c.email_address

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3 years ago
Read each description below, and then choose the correct term that matches the description from the drop-down menus.
lilavasa [31]

hyperlink

browser

website

webpage

5 0
3 years ago
Read 2 more answers
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