Answer: Planned data redundancy
Explanation: Planned data redundancy is the problem that occurs in the single database where the same data unit gets stored in two different places. Data redundancy can acquire unnecessary space of the database.
Planned data redundancy can effect the processing and make modification of the data difficult. It can also create the corruption in the database .Thus , the definition mentioned in the question of data redundancy.
Answer:
Data type is an attribute of the data in the computer science. It basically guide the compiler and interpreter about the data utilization in the program. Data type basically define the operation, which can be done on given data.
There are different types of data types are as follow:
Integer data type: This type if data type basically represent the integer type of data value from largest to smallest order.
For example: int p = 10;
Real data type: This type of data type is used to represent the real type of number from largest to smallest range.
For example: float b = 17.6;
Answer:
return values.remove() + values.remove();
Explanation:
The appropriate expression to complete the method, which is designed to return the sum of the two smallest values in the parameter array number is indicated below in bold font :
public static int
sumTwoLowestElements(int[] numbers)
{
PriorityQueue values = new PriorityQueue<>();
for (int num: numbers)
{ values.add(num);
}
return values.remove() + values.remove();
}
The return statementin programming is often used when a function is ready to return a value to its caller.
Answer:
if, then, else
Explanation:
you specified that if you enter award for 1st prize then it'll display 1st prize but you didnt specify what will happen if user does not enter 1st prize or what happens if 1st prize is not allocated. To me it looks like you got the 'if' and 'then' part correct but you dont have a 'else' part to it therefore it'll create an error when its not declared.
Answer:
Primary key retains its uniqueness even after you remove some of the fields.
Explanation:
I am assuming that this question is related to database. Therefore, I am answering it according to database context.
In database, you can have multiple rows and columns. Each column shows a specific attribute while each row plots the data according to the attributes. However, there is the first column of each of main table that has unique set of values. It is called the Primary Key. Some key features of primary key are:
- It always contains the unique value.
- Its value cannot be null.
- A table can have at max one primary key.
- It can be the combination of multiple columns but it must be unique.
Therefore, the primary key has the ability to retain its uniqueness even after you remove some of the fields.
