(Done) 2. Programming

Question 1

What are the five main data types

Answer 1

• String
• Integer
• Boolean
• Character
• Float

Question 2

What data is a string

Answer 2

• A collection of characters
• Used to represent text

Question 3

What data is an integer

Answer 3

• Whole numbers only

Question 4

What data is boolean

Answer 4

• One of two values, usually true or false

Question 5

What data is a character

Answer 5

• A single letter, number, symbol

Question 6

What data is a float

Answer 6

• Numbers that have a decimal point

Question 7

How much memory does an integer use

Answer 7

• 2 or 4 bytes

Question 8

How much memory does a float use

Answer 8

• 4 or 8 bytes

Question 9

How much data does Boolean use

Answer 9

• 1 bit is needed but 1 byte is used

Question 10

How much data does a character use

Answer 10

• 1 byte

Question 11

How much data does a string use

Answer 11

• 1 byte per character in a string

Question 12

Define a constant

Answer 12

• A constant is assigned a data value at design time that can’t be changed

Question 13

Define a variable

Answer 13

• A named memory address that holds a value
• The value held in a variable can change as the program is running

Question 14

How is SELECT used in SQL

Answer 14

• Followed by the names of the fields(columns) you want to retrieve and display

Question 15

How is FROM used in SQL

Answer 15

• Followed by the names of the table(s) you want to search

Question 16

How is WHERE used in SQL

Answer 16

• Used to specify conditions that a record must satisfy before it is returned

Question 17

What does SQL stand for

Answer 17

structured query language