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Questions and Answers
Which one of these is the most correct?
Which one of these is the most correct?
- Modern databases evolved from file systems.
- Database design is not important.
- A database is a valuable asset for decision making. (correct)
- Data and information are the same thing.
What is the difference between data and information?
What is the difference between data and information?
- Data is processed and organized information.
- Information is unprocessed facts and figures.
- Data is unprocessed facts and figures. (correct)
- Data and information are the same thing.
Why are databases valuable assets for decision making?
Why are databases valuable assets for decision making?
- Databases are used for entertainment purposes.
- Databases help in organizing and storing large amounts of data. (correct)
- Databases are used for file management.
- Databases provide a platform for social media.
What are the main components of a database system?
What are the main components of a database system?
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What are the main functions of a database management system (DBMS)?
What are the main functions of a database management system (DBMS)?
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Study Notes
Data vs. Information
- Data refers to raw, unorganized facts and figures, while information is the result of organizing, analyzing, and interpreting data to extract meaning and value.
Value of Databases
- Databases are valuable assets for decision making because they provide a centralized repository of organized data, enabling efficient storage, retrieval, and analysis of data to support informed decision making.
Database System Components
- A database system consists of three main components: hardware, software, and data, which work together to store, manage, and provide access to data.
Functions of Database Management System (DBMS)
- A DBMS performs several key functions, including:
- Data definition, which involves defining the structure and organization of data
- Data manipulation, which involves adding, modifying, and deleting data
- Data querying, which involves retrieving and extracting specific data
- Data security, which involves protecting data from unauthorized access and use
- Data backup and recovery, which involves ensuring data availability and integrity in the event of system failures or errors.
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