A link is a popular way to describe relationships in a relational database.
There are three types of relationships (links) between tables:
1. One-to-one <span>relationship , that allows only one record on each side of the relationship.
2. </span>One-to-many <span>relationship, that allows a single record in one table to be related to multiple records in another table.
3. </span>Many-to-many<span> relationship, in which many records in a table can link to many records in another table. F</span>
The answer & explanation for this question is given in the attachment below.
B. Television. It provided <span>instant communication and information to a massive audience for the first time in 1927.
Hope this helps :)</span>
Answer:
Following are the program in the Python Programming language.
#define function
def negative_num(num_list):
#set list type variable
nlist=[]
#set the for loop
for n in num_list:
#check negative numbers
if(n<0):
#add the value of n in list
nlist.append(n)
#return list
return nlist
#set new list type variable that store list
newl=[-5,8,-6,3,-4,9,-7]
#print and call the function
print(negative_num(newl))
<u>Output</u>:
[-5, -6, -4, -7]
Explanation:
Here, we define the function "negative_num" and pass an argument "num_list" in its parameter and inside the function.
- Set new list data type variable "nlist".
- Set the for loop which iterate as the list.
- Set the if conditional statement to check the value of the list is less than 0 then, add that negative values in the variable "nlist".
- Then, return the new list.
Finally, we set a variable "newl" which store the list of negative and positive numbers then, we print and call the function.
The purpose of the operating systems is to provide an interface between the user and hardware. It's mange all resources, for example; memory, processors, and disk space. It's also mange how to file and store data in a computer system.
