Podcast
Questions and Answers
What is the main difference between the binary and decimal systems?
What is the main difference between the binary and decimal systems?
- The decimal system can represent binary numbers.
- The decimal system is used exclusively in computers.
- The binary system uses only two symbols. (correct)
- The binary system uses ten symbols.
Why do we need more digits in the decimal system to represent larger values?
Why do we need more digits in the decimal system to represent larger values?
- Because the decimal system cannot exceed nine without an extra digit. (correct)
- Because each digit can only represent values up to '10'.
- Because larger values exceed the digit range of the decimal system.
- Because the binary system represents numbers more efficiently.
What does ASCII stand for?
What does ASCII stand for?
- American Standard Code for Information Interchange. (correct)
- Applied Standard Code for Information Interchange.
- Advanced System Code for Information Interchange.
- American Symbol Code for Information Interchange.
How many digits are used to represent each letter in ASCII?
How many digits are used to represent each letter in ASCII?
Which of the following best describes how the binary system operates in relation to computer chips?
Which of the following best describes how the binary system operates in relation to computer chips?
Which of the following statements is true regarding the representation of data types in computers?
Which of the following statements is true regarding the representation of data types in computers?
Which system has been primarily used for numerical representation in human civilization for millennia?
Which system has been primarily used for numerical representation in human civilization for millennia?
What happens when the value you want to illustrate in the binary system exceeds one?
What happens when the value you want to illustrate in the binary system exceeds one?
What is the primary structure upon which a relational database is based?
What is the primary structure upon which a relational database is based?
In a relational database, what does each row represent?
In a relational database, what does each row represent?
Which of the following is NOT a standard component of a table in a relational database?
Which of the following is NOT a standard component of a table in a relational database?
What commonality do relational databases share with spreadsheet software like Excel?
What commonality do relational databases share with spreadsheet software like Excel?
When organizing data into a relational database, what is typically done with the information?
When organizing data into a relational database, what is typically done with the information?
Which of the following columns would likely be included in a 'customer_data' table?
Which of the following columns would likely be included in a 'customer_data' table?
In a relational database, the structure allows for which of the following actions?
In a relational database, the structure allows for which of the following actions?
What is the role of columns in a relational database table?
What is the role of columns in a relational database table?
What is code primarily used for in relation to hardware?
What is code primarily used for in relation to hardware?
Which of the following is an example of system software?
Which of the following is an example of system software?
What distinguishes application software from system software?
What distinguishes application software from system software?
What characterizes discrete data?
What characterizes discrete data?
How do continuous data differ from discrete data?
How do continuous data differ from discrete data?
Why does a computer perform tasks when given a code?
Why does a computer perform tasks when given a code?
What role do programmers play in software development?
What role do programmers play in software development?
Which option best represents application software?
Which option best represents application software?
What is a key characteristic of continuous data?
What is a key characteristic of continuous data?
Which of the following correctly describes a transistor?
Which of the following correctly describes a transistor?
How does a computer ultimately process different data types?
How does a computer ultimately process different data types?
What type of data is referred to as 'digital data'?
What type of data is referred to as 'digital data'?
Why is a computer able to 'remember' values stored in its CPU?
Why is a computer able to 'remember' values stored in its CPU?
What happens to a transistor when it represents a '0'?
What happens to a transistor when it represents a '0'?
What is NOT an example of continuous data?
What is NOT an example of continuous data?
What is the main role of a CPU in a computer?
What is the main role of a CPU in a computer?
What is the primary purpose of a data warehouse?
What is the primary purpose of a data warehouse?
Which of the following advantages is NOT typically associated with data warehouses?
Which of the following advantages is NOT typically associated with data warehouses?
What type of data do relational databases excel at managing?
What type of data do relational databases excel at managing?
How does Big Data influence the choice of databases for organizations?
How does Big Data influence the choice of databases for organizations?
Which of the following statements about data warehouses is true?
Which of the following statements about data warehouses is true?
What is a significant challenge associated with using relational databases for Big Data?
What is a significant challenge associated with using relational databases for Big Data?
Why might organizations prefer data warehouses over traditional relational databases?
Why might organizations prefer data warehouses over traditional relational databases?
What aspect of data warehouses helps ensure effective business intelligence?
What aspect of data warehouses helps ensure effective business intelligence?
Flashcards are hidden until you start studying
Study Notes
Software and Code
- Software consists of code, which is a set of step-by-step instructions executed by hardware.
- Code is purpose-driven, such as performing mathematical operations, converting digits to text, and displaying website content.
- Once code meets its purpose, it becomes known as "software."
- Programmers use various programming languages to write code.
Categories of Software
- System Software: Ensures hardware functions correctly and efficiently.
- Application Software: Enables users to perform specific tasks, such as document creation, gaming, and video playback.
Data Types
- Discrete Data: Countable and categorized into distinct groups, e.g., the number of apples.
- Continuous Data: Measured without inherent cut-off points, e.g., length of a string.
Digital vs. Analog Data
- Discrete data is referred to as "digital data," while continuous data is often called "analog data."
- Continuous data exists naturally in the environment; examples include temperatures and sound waves.
- Digital data reduces to binary form using 1's and 0's for computer processing.
The Role of Binary System
- Computers process data using the binary system that corresponds to the "on" (1) and "off" (0) states of transistors in CPUs.
- The CPU acts as the brain of the computer, using millions of transistors for processing.
Number Systems
- The Decimal System uses ten symbols (0-9) to represent values.
- The Binary System uses two symbols (0 and 1) to represent values; an expansion in digits is needed when values exceed one.
ASCII Code
- The ASCII code assigns specific binary numbers to alphabet letters and numerical digits, allowing computers to process text.
Data Storage
- All types of data (Booleans, integers, floats, strings, images, audio) are represented in binary format.
- Relational Databases: Organize data into structured tables with rows (records) and columns (information types).
Database Structure
- Data is categorized into multiple tables, such as customer data, order data, and employee data.
- Each table is structured with rows for individual records and columns for data attributes.
Data Warehouse
- A data warehouse is a specialized database for analyzing large volumes of historical data.
- Advantages include scalability, data integration from various sources, and enhanced data quality.
Big Data Impact
- Traditional relational databases manage smaller, well-structured data efficiently, but face challenges with larger datasets.
- Organizations need to store and analyze Big Data, which is unstructured and extensive, thus requiring alternative storage solutions.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
