Which of the following traversals yields BADEC? A / \ B C / \ D E a. only in-order b. only level order c. only post-order d. only pre-order e. pre-order and level order f. in-order and level order g. none of the above
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Which of the following traversals yields BADEC?
A
/ \
B C
/ \
D E
a. only in-order
b. only level order
c. only post-order
d. only pre-order
e. pre-order and level order
f. in-order and level order
g. none of the above
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- Multiple key-value pairs, each representing a person's name and food, are read from input and added to order_records1. First, merge order_records2 with order_records1. Then, clear order_records1.Select name from instructor where name like '%Math' order by name; By default, the order by clause lists item in order. O Descending O Ascending Same O Any17- Multi-Row subquery uses which operators? a. ANY, ALL, IN b. <, >, <=, >= c. AND, IN, OR d. SUM, MIN, MAX, AVG
- The ORDER BY clause can only be used in _______calculate_new_balance Given a starting balance (a number), and a list of transaction tuples, calculate the final balance for an account. Transaction tuples are of the shape ("description", amount, "withdrawal") , or ("description", amount, "deposit"). The last entry in the tuple will be either "withdrawal" or "deposit". Every withdrawal decreases the balance of the account by the specified amount, and every deposit increases the balance. The return value is the new account balance, as a number. (which could be negative) Sample calls should look like: >>> calculate_new_balance(100, [("payday", 20, "deposit"), ("new shoes", 50, "withdrawal"), ("illicit winnings", 200, "deposit")])270>>> calculate_new_balance(100, [])100The HAVING clause applies to columns and expressions for individual rows, while the WHERE clause is applied to the output of a GROUP BY operation. True or False ?
- Assignment Two: We will write three procedures on our tables, the first of which I have provided as an example. proclnsertPlayer takes one IN VARCHAR(16) paramater and returns an error code in the second SMALLINT (INOUT) parameter. The procedure checks the parameter and, if there are no errors, inserts the value into tblPlayers. Documentation of errors Condition Error code No errors 1st param Null or zero len playerID taken 1 proclnsertGame will receive two IN VARCHAR(16) interpreted asThis kind of code gives me errors i have more info below. My codeDELIMITER //CREATE PROCEDURE GET_INVOICE_DATE (in I_INVOICE_NUM CHAR(5))DECLARE I_CUST_ID CHAR(5),DECLARE I_CUST_NAME VARCHAR(41),DECLARE I_INVOICE_DATE DATE BEGIN SELECT c.CUST_ID, CONCAT(c.FIRST_NAME, ' ', c.LAST_NAME), i.INVOICE_DATE INTO I_CUST_ID, I_CUST_NAME, I_INVOICE_DATE FROM INVOICES i INNER JOIN CUSTOMER c ON i.CUST_ID = c.CUST_ID WHERE i.INVOICE_NUM = I_INVOICE_NUM; END // Delimiter ; Helpfull info Task #6 – same process as Task #5• Procedure name is GET_INVOICE_DATE with I_INVOICE_NUM in parentheses with 5 characters• There should be 3 declare statements for I_CUST_ID CHAR(5); I_CUST_NAME VARCHAR(41); andI_INVOICE_DATE DATE is datatype• SELECT statement should include the CUSTOMER.CUST_ID, CONCAT for first_name andlast_name AS customer_name, invoice_date• INTO the 3 “I” fields in the declare statement• From should include the CUSTOMER and INVOICES tables• Where clause to join CUSTOMER.CUST_ID =…Can you help me with the code, please
