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Questions and Answers
What type of data can only take two values, either TRUE or FALSE?
What type of data can only take two values, either TRUE or FALSE?
- Float
- Integer
- Boolean (correct)
- Array
Which data type is used to store multiple data of the same data type in the name of a single variable?
Which data type is used to store multiple data of the same data type in the name of a single variable?
- Object
- Array (correct)
- NULL
- String
What represents all the decimal and exponential numbers?
What represents all the decimal and exponential numbers?
- Resource
- Integer
- Boolean
- Float (correct)
What is used to store external references and resources?
What is used to store external references and resources?
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Which data type is used to hold a NULL value?
Which data type is used to hold a NULL value?
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Study Notes
Data Types Overview
- A Boolean data type can only take two values: TRUE or FALSE, often used in conditional statements and logic operations.
Collections of Data
- An array is a data structure that stores multiple values of the same data type under a single variable name, allowing for efficient data management and access.
Numerical Data Representation
- A floating-point data type represents all decimal and exponential numbers, useful for calculations requiring precision, such as scientific computations.
External References
- A pointer is used to store external references and resources, with the ability to point to specific memory locations in programming, facilitating dynamic data access.
Undefined or Empty Values
- A NULL data type holds a NULL value, indicating the absence of any value or object, often used in database management or data structures to signify empty entries.
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