Answer:
Select title, description , first_name, last_name from film inner join film_actor on film.film_id = film_actor.film_id inner join actor on film_actor.actor_id = actor.actor_id where title LIKE 'zo%';
Explanation:
- The INNER JOIN keyword selects records that have matching values in both tables.
- The WHERE clause is used to filter records.
- The WHERE clause is used to extract only those records that fulfill a specified condition.
Answer:
Option 2: Variable names can not begin with a number.
Explanation:
As given Mark and John named a variable as 24_hour_mart while writing a program in python.
While it is forbidden to name a variable starting with any digit, only alphabets (capital and smaller) and underscore can be the first letter of the variable name.
Moreover, by considering the other options given:
- Variable name can include the underscore (_) between the words. It is used instead of spaces that are not allowed.
- There is no upper limit for variable length, it can be of any reasonable length and more than 10 characters say 11 or 12 are reasonable.
- There is no lower limit for variable length, it can be any reasonable length , even it can be of 1 character.
Variables named in python language must not be the keywords as they are reserved for other purposes.
i hope it will help you!
Answer:
(1) Carry flag (2) Overflow flag (3) Sign or negative Flag
Explanation:
Solution
(1) The carry flag : It refers to the adding or subtracting. a two registers has a borrow or carry bit
(2) The over flow flag: This flag specify that a sign bit has been modified during subtracting or adding of operations
(3) The sign flag: This is also called a negative sign flag is a single bit status in a register that specify whether the last mathematical operations generated a value to know if the most significant bit was set.
Answer: Variety
Explanation:
According to the given question, Haley is dealing with the variety of the organization products posts on the social media networking as Haley's employer wants to comping all the data or information related to the products into the database system.
- The database is one of the type of management system that manages all the database that are shared by the customers or users.
- The main important function of the database is that it organize the data more accurately and properly in the system.
- The database management system (DBMS) handle all the data in the system more effectively from the variety of the users.
Therefore, Variety is the correct answer.
Answer:
def sum_1k(M):
s = 0
for k in range(1, M+1):
s = s + 1.0/k
return s
def test_sum_1k():
expected_value = 1.0+1.0/2+1.0/3
computed_value = sum_1k(3)
if expected_value == computed_value:
print("Test is successful")
else:
print("Test is NOT successful")
test_sum_1k()
Explanation:
It seems the hidden part is a summation (sigma) notation that goes from 1 to M with 1/k.
- Inside the <em>sum_1k(M)</em>, iterate from 1 to M and calculate-return the sum of the expression.
- Inside the <em>test_sum_1k(),</em> calculate the <em>expected_value,</em> refers to the value that is calculated by hand and <em>computed_value,</em> refers to the value that is the result of the <em>sum_1k(3). </em>Then, compare the values and print the appropriate message
- Call the <em>test_sum_1k()</em> to see the result
