The format for the UPDATE command is the word UPDATE, followed by the name of the table to be updated. The next portion of the command consists of the word <u>SET</u>, followed by the name of the column to be updated, an equals sign, and the new value.
Explanation:
- An Update Query is an action query (SQL statement) that changes a set of records according to criteria you specify.
- The SQL UPDATE Query is used to modify the existing records in a table. You can use the WHERE clause with the UPDATE query to update the selected rows, otherwise all the rows would be affected.
- Update Queries let you modify the values of a field or fields in a table.
<u>UPDATE Syntax
</u>
- UPDATE table_name
- SET column1 = value1, column2 = value2, ...
- WHERE condition;
UPDATE table_name SET column1 = value1, column2 = value2, etc WHERE condition;
- table_name: name of the table
- column1: name of first , second, third column....
- value1: new value for first, second, third column....
- condition: condition to select the rows for which the
- values of columns needs to be updated.
On windows, it is the type command.
On linux, the cat command outputs the file.
All bytes that represent printable characters will be displayed as ASCII or even Unicode.
Answer: Operating system
Explanation:
The operating system is the type of software that are responsible for manage the processor time and also the memory allocation in the system. The operating system mainly deals with the processor time by scheduling the processor work done in the system.
The OS mainly control the system and then schedule the execution of various types of function by the central processing system (CPU). It also control the memory allocation in the system.
Answer:
import java.io.*;
public class Main
{
public static void main(String[] args) throws IOException {
BufferedReader bufferObject=new BufferedReader(new InputStreamReader(System.in));
String stringObject=bufferObject.readLine();
while(!stringObject.equals("99:99AM")){
System.out.println(convertedTime(stringObject));
stringObject=bufferObject.readLine();
}
}
public static String convertedTime(String stringObject){
String s=stringObject.substring(stringObject.length()-2);
String[] timeObject=stringObject.substring(0,5).split(":");
if(s.equals("AM")){
if(timeObject[0].equals("12")) return "00"+timeObject[1];
else return timeObject[0]+timeObject[1];
}
else{
if(timeObject[0].equals("12")) return "12"+timeObject[1];
else{
int hours=Integer.valueOf(timeObject[0]);
timeObject[0]=String.valueOf(12+hours);
return timeObject[0]+timeObject[1];
}
}
}
}
Explanation:
- Inside the main method run a while loop until stringObject is not equal to the string "99:99AM".
- Call the convertedTime method and display the results.
- Use the same hours and minutes except for 12th hour If the time is in AM.
- Use "00" instead of 12, if it is 12th hour.
- Add hours to 12, if the time is in PM and don't change anything in case of 12.
