Podcast
Questions and Answers
Which of the following best describes the relationship between a byte and a bit?
Which of the following best describes the relationship between a byte and a bit?
- A byte is smaller than a bit.
- A byte is a combination of 8 bits. (correct)
- A byte is a combination of 4 bits.
- A bit is a combination of 8 bytes.
A student's address, phone number, and date of birth are each examples of what in a database hierarchy?
A student's address, phone number, and date of birth are each examples of what in a database hierarchy?
- Files
- Bytes
- Records
- Fields (correct)
In database terminology, what is another common term for a 'record'?
In database terminology, what is another common term for a 'record'?
- Attribute
- Database
- Table
- Tuple (correct)
What is the primary purpose of normalization in the context of databases?
What is the primary purpose of normalization in the context of databases?
Which of the following data hierarchy levels represents the smallest unit of data that can be either 0 or 1?
Which of the following data hierarchy levels represents the smallest unit of data that can be either 0 or 1?
A table containing student names, IDs, and majors would be best described as a:
A table containing student names, IDs, and majors would be best described as a:
What is the significance of a 'field' within a database?
What is the significance of a 'field' within a database?
If a database contains tables for 'Customers', 'Orders', and 'Products', what term best describes the entire collection?
If a database contains tables for 'Customers', 'Orders', and 'Products', what term best describes the entire collection?
Which of the following is an example of what a single byte can represent?
Which of the following is an example of what a single byte can represent?
How does normalization contribute to the structure of a database?
How does normalization contribute to the structure of a database?
Flashcards
Bit
Bit
The smallest unit of data, represented as 0 or 1 (binary digit).
Byte
Byte
A unit of data consisting of 8 bits, representing a single character.
Field
Field
A combination of bytes representing an aspect of a business object.
Record
Record
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File
File
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Database
Database
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Study Notes
- Data hierarchy organizes data from smallest to largest units.
Bit
- The smallest unit of data in a computer.
- Represents a binary digit, with a value of 0 or 1.
- 1 indicates true, high, or an electronic pulse passing through.
- 0 indicates false or low.
Byte
- A combination of bits.
- Consists of 8 bits.
- Represents a single character.
- Examples include letters (A-Z), numbers (0-9), and special characters.
Field
- The smallest addressable unit with meaning.
- Represents an aspect of a business object.
- A combination of bytes.
- Also known as a column or attribute.
- Examples: StudentID, StudentName, Address
Record
- A collection of related data fields.
- Also referred to as a row or tuple.
File
- A collection of related records.
- Also known as a table.
Database
- An organized collection of logically related data.
- Normalization is used to organize data, decompose into tables, and group logically.
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