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WorksheetsFundamentals of Database Management
Total questions: 15
Worksheet time: 8mins
What does SQL stand for?
Structured Query List
Structured Query Language
Standard Query Language
Simple Query Language
Which SQL command is used to retrieve data?
INSERT
DELETE
SELECT
UPDATE
What is the purpose of the Entity-Relationship Model?
To optimize query performance in SQL databases.
To create a programming language for database management.
To store data in a flat file format.
To visually represent data structures and relationships in database design.
In an ER diagram, what does a rectangle represent?
A rectangle represents an attribute.
A rectangle represents an entity.
A rectangle represents a constraint.
A rectangle represents a relationship.
What is a primary key in a database?
A primary key is a type of foreign key in a database.
A primary key can have duplicate values in a database.
A primary key is a unique identifier for a record in a database.
A primary key is used to store large amounts of data in a database.
What is a foreign key?
A foreign key is a field in a table that links to the primary key of another table.
A foreign key is a unique identifier for a table.
A foreign key is a type of primary key.
A foreign key is a field that cannot be null.
What is the purpose of data integrity constraints?
To enhance the speed of data retrieval in a database.
To provide a backup for lost data in a database.
The purpose of data integrity constraints is to maintain the accuracy and consistency of data in a database.
To allow unlimited data entry without restrictions.
Name one type of data integrity constraint.
Primary key constraint
Unique constraint
Foreign key constraint
Check constraint
What is the main difference between a file system and a database management system?
A file system manages files, while a database management system manages structured data.
A file system requires SQL for data manipulation, while a database management system does not.
A file system is used for data backup, while a database management system is for data retrieval.
A file system stores data in tables, while a database management system stores files.
What are the advantages of using a database management system?
Increased data duplication
Advantages of using a database management system include data integrity, security, efficient management, reduced redundancy, and improved access.
Limited data access
Higher maintenance costs
What is a relational database?
A relational database is a database that organizes data into tables with defined relationships between them.
A relational database is a software application for managing emails.
A relational database is a collection of unstructured data.
A relational database is a type of cloud storage service.
What is normalization in database design?
Normalization is the process of combining all data into a single table.
Normalization involves encrypting data for security purposes.
Normalization is the method of backing up data to prevent loss.
Normalization in database design is the process of organizing data to minimize redundancy and dependency by dividing it into related tables.
What is a database application?
A programming language for web development.
A type of hardware used for data storage.
A method for data encryption.
A software program that manages and interacts with a database.
Can you name a common database application?
Oracle
MySQL
PostgreSQL
SQLite
What is the purpose of indexing in databases?
To ensure data integrity
The purpose of indexing in databases is to speed up data retrieval.
To increase the size of the database
To create backups of the data
