computing

Which of the following is a primary key in a database table?

• A primary key in a database table is a column or a set of columns that uniquely identifies each record in the table.
• A primary key is a column that allows duplicate values
• A primary key is a column that stores only numeric values

What is the purpose of a database index?

• To improve data retrieval speed.
• To store data in a secure manner
• To increase database size
• To decrease data redundancy

Which of the following is an example of an input device?

• keyboard
• monitor
• printer
• mouse

What is the purpose of a scanner

• To cook food
• To play music
• To send emails
• To convert physical documents or images into digital format

Which of this is a output devices

• Speaker
• Monitor
• Keyboard
• Printer

What is the purpose of a touch screen?

• The purpose of a touch screen is to enable direct user interaction with a device by touching the display.
• To play music
• To make the screen look pretty
• To cook food

Which of the following is an example of a storage device

• USB cable
• Hard drive
• Keyboard
• Monitor

What is the purpose of a database transaction?

• To make data more difficult to access
• To slow down data retrieval
• To ensure data integrity by grouping multiple operations into a single unit
• To increase the risk of data corruption

1. What is a database?

• A type of internet browser
• A type of software used for word processing
• An organized collection of data stored and accessed electronically.
• A type of computer hardware

1. What is the purpose of a database?

• To store, organize, and manage data efficiently.
• To learn a new language
• To play video games
• To cook delicious meals