Visitor activity

jjnuj

Public contributions from visitors who posted under the name jjnuj.

Questions 25
Answers 0

Recent questions

Latest questions from jjnuj

What do we call the vertical columns in a database? answer Rows Records Fields Tables
1 answer
What does a NOT NULL constraint do? answer Allows fields to be left blank Ensures a field must have a value Deletes records with null values Changes the format of a field
1 answer
hat is the main purpose of a physical data model? answer To create a high-level view of data To show how to set up a database using a specific database management system To design user interfaces To manage software updat...
1 answer
n a one-to-one relationship, how many records in one table are associated with records in another table? answer One record in one table is associated with multiple records in another table One record in one table is asso...
1 answer
What is the purpose of forms in a database? answer To create new tables To reduce data entry errors To delete records To change database settings
1 answer
What does forced data entry mean in the context of databases? answer Forcing users to enter data quickly. Controlling and validating the information users enter. Forcing users to use specific software. Forcing users to b...
1 answer
What is a document database? answer A type of relational database A type of non-relational database A type of spreadsheet A type of word processor
1 answer
What does RDBMS stand for? answer Relational Database Management System Random Data Management System Real-time Database Management System Relational Data Monitoring System
1 answer
What does a relationship in a database do? answer Stores data Connects two entities Deletes data Creates a new database
1 answer
How does a document database store data? answer In rows and columns In flexible documents In spreadsheets In word documents
1 answer
What data formats are commonly used in document databases? answer CSV and TXT JSON and XML DOC and PDF HTML and CSS
1 answer
Why are key-value databases useful for tasks that need quick data access? answer They use complex data models They have a flexible structure They are difficult to understand They cannot grow quickly
1 answer
What does a key in a key-value database represent? answer A unique identifier A type of data A table A column
1 answer
What can the value in a key-value pair be? answer Only numbers Only words Any type of data Only dates
1 answer
What is a relational database? answer A database that stores data in a single table. A database that keeps data in several connected tables. A database that does not use tables at all. A database that only stores text da...
1 answer
What does NoSQL stand for? answer Not Only SQL No SQL Allowed New SQL Non-Structured Query Language
1 answer
Which of the following correctly defines a field? answer A single piece of information in a database A collection of related fields in a row A summary of data A request for data from the database
1 answer
What is a query in a database? answer A request for data A type of report A column in a table A row in a table
1 answer
Which of the following correctly defines a database record? answer A single piece of information in a database A collection of related fields in a row A column in a table A summary of data
1 answer
What is the best way to enter large amounts of data into a database? answer Typing it in manually Importing it from other sources Printing and scanning the information Using a word processor
1 answer
What is a key benefit of using offline databases? answer They are accessible from anywhere. They reduce the risk of cyber attacks. They are managed by cloud providers. They offer 99.9% availability.
1 answer
Why are databases better for concurrent use compared to spreadsheets? answer Databases are cheaper. Databases allow many users to access data simultaneously. Spreadsheets cannot store words. Spreadsheets are only for sin...
1 answer
What is one reason organizations prefer databases over spreadsheets? answer Databases can generate colorful graphs. Databases can handle more data points efficiently. Spreadsheets are harder to understand. Spreadsheets a...
1 answer
What is a database? answer A place to store physical items A highly organized, multi-table digital storage system A type of computer game A social media platform
1 answer
Why are databases important for businesses? answer They help in organizing physical files. They allow businesses to make smart choices and plan for the future. They provide a list of all installed software. They only wor...
1 answer

Recent answers

Latest answers from jjnuj

No public answers found for this visitor name.