paper 2 section 8

Question 1

Variable

Answer 1

A labelled area of memory that can be changed by the program

Question 2

Upper and Lower

Answer 2

.upper converts string to uppercase
.lower converts string to lowercase
sentence=”hello”
print(sentence.upper())

Question 3

Text Files

Answer 3

To read a text file:
TextFile=open(“test.txt”, “r+”)
OpenText=TextFile.read()
TextFile.close()
print(OpenText)

Question 4

Subprograms

Answer 4

Set of reusable code that has a set of instructions that is executed when called

Question 5

SQL

Answer 5

SELECT - specifies which fields to include
FROM - which tables the fields will come from
WHERE - includes any criteria
ORDER BY - sorts the results
* - All

Question 6

Sequencing

Answer 6

Putting instructions in order to perform a task.

Question 7

Selection

Answer 7

Conditions used to decide whether code is executed.

Question 8

Procedure

Answer 8

Doesn’t return a value
print()

Question 9

Iteration

Answer 9

Repetition of code.

Question 10

Indexes

Answer 10

Characters in string can be referenced by index
studentname=”Rina”
studentname[0] is R

Question 11

Functions

Answer 11

Returns a value
def number():
result=2*2
return(result)

Question 12

Database

Answer 12

A collection of records each having an identical record structure

Question 13

Data Types - String

Answer 13

Several keyboard characters
Str

Question 14

Data Types - Real/Float

Answer 14

A fraction/decimal
float

Question 15

Data Types - Integer

Answer 15

A whole number
int

Question 16

Data Types - Character

Answer 16

A single keyboard character
Char

Question 17

Data Types - Boolean

Answer 17

True or False
bool

Question 18

Assignment

Answer 18

Assigning a value to a variable.

Question 19

Arrays

Answer 19

Data structure of fixed length used to hold several items of the same data type
list=[“January”,”February”,”March”]
no=1
for x in list:
print(x, “Position:”,no)
no=no+1

Question 20

2D Arrays

Answer 20

Stores a table in python
For example:
[1,2,3,4,5],[6,7,8,9,10]