Answer:- Major property of a good hash code is that objects which are equal should return the same hash code .
Explanation: Hash codes is a numeric value which  is used for identify a object while a equality testing .Hash code can occupy the value of any length and then returns a fixed length value. The value of hash codes are variable. 
If two objects are equal then by the method of equal(object) if the hashcode() function is called on both the objects , they produce the same value.
 
        
             
        
        
        
Answer:
The answer is "Connectors".
Explanation:
Please find the Connectors image in the attached file.
In this question, the connectors symbol is usually small throughout the flowcharts. It is used as a connection to display and changes throughout the flux. It was usually marked by major letters that indicate jump points. This diagram visually shows the sequence of events in a system and who is accountable.
 
        
             
        
        
        
The only sure way to prevent SQL Injection attacks is input validation and parametrized queries including prepared statements. The application code should never use the input directly. ... Database errors can be used with SQL Injection to gain information about your database.