Answer:
A primary key is a special relational database table column (or combination of columns) designated to uniquely identify each table record. A primary key is used as a unique identifier to quickly parse data within the table. A table cannot have more than one primary key.
Primary Key.
Candidate Key.
Alternate Key.
Super Key.
Composite Key.
Foreign Key.
Unique Key.
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. Informally, a primary key is "which attributes identify a record," and in simple cases constitute a single attribute: a unique ID.
Explanation:
Answer:
def str_analysis(s):
if s.isdigit():
s = int(s)
if s > 99:
message = str(s) + " is a pretty big number"
else:
message = str(s) + " is a smaller number than expected"
elif s.isalpha():
message = s + " is all alphabetical characters!"
else:
message = "There are multiple character types"
return message;
s = input("enter word or integer: ")
while s != "":
print(str_analysis(s))
s = input("enter word or integer: ")
Explanation:
- Check if the string is digit, alphabetical, or mixed inside the function
- Ask the user for the input
- Call and print the result of the <em>str_analysis</em> function inside the while loop
- Keep asking for the input until the given string is empty
Answer:
A
Explanation:
A hacker searching for open ports denotes vulnerability of computer (to hacking).
Cheers
Based on the scenario above about the leading-trailing system Both technician A and B are incorrect.
<h3>How many brake shoes function?</h3>
There are known to be two shoes function that are said to be working a way where both become either the trailing shoe or leading shoe based on whether the vehicle is moving forward or backward.
Therefore we can say that, Based on the scenario above about the leading-trailing system Both technician A and B are incorrect.
Learn more about trailing system from
brainly.com/question/14367881
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