
Database Concepts Quizs
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Information Technology (IT)
11th Grade
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Composite key
A primary key composed of two or more columns.
A unique identifier for a single column.
A foreign key that references multiple tables.
A key that allows duplicate values in a column.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Primary key
A unique identifier for each record in a table.
A field that can contain duplicate values.
A field that is used to sort data in a table.
A field that is optional in a database table.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Entity in a database
A type of database management system
An object or thing that can have data stored about it.
A method for querying data
A programming language used for database operations
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Purpose of a foreign key
To create a link between two tables.
To store data in a single table.
To delete records from a database.
To increase the speed of data retrieval.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Multiple primary keys in a table
True; a table can have multiple primary keys.
False; a table can only have one primary key.
A table can have primary keys in different columns.
A table can have primary keys if it has foreign keys.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Normalization
It reduces data redundancy and improves data integrity.
It increases data redundancy and decreases data integrity.
It eliminates all data from the database.
It is a method to encrypt sensitive data.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
SQL command to create a table
CREATE TABLE
INSERT INTO
DROP TABLE
SELECT * FROM
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