
Database Management Concepts
Authored by Ghazi Irfan
Computers
University
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a primary key in a database?
A primary key is a type of foreign key.
A primary key can be duplicated across records.
A primary key is a unique identifier for a records.
A primary key is used to store large amounts of data.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define a foreign key and its purpose.
Links two tables in a database, referencing the p.k of another table.
A foreign key is a type of database index.
A foreign key is a unique identifier for a table.
A foreign key is a method for encrypting data in database management system.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the different types of keys in a relational database?
Primary Key, Foreign Key, Unique Key, Candidate Key, Access Key
Primary Key, Foreign Key, Unique Key, Composite Key, Candidate Key
Primary Key, Foreign Key, Unique Key, Composite Key, Index Key
Primary Key, Foreign Key, Unique Key, Composite Key, Data Key
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of normalization in databases.
Normalization is the process of deleting all data from a database.
Normalization process of organizing data to reduce redundancy.
Normalization increases data redundancy for better performance.
Normalization is a method to encrypt sensitive data in databases.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the First Normal Form (1NF)?
Columns contain atomic values and eliminate repeating groups.
To ensure all data is stored in a single column.
To allow for duplicate entries in a table.
To group related data into separate tables.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the Second Normal Form (2NF) and its requirements.
Second Normal Form (2NF) if it is in First Normal Form (1NF) and all non-key attributes are fully functionally dependent.
A table is in Second Normal Form (2NF) if it has a single primary key without any non-key attributes.
A table is in Second Normal Form (2NF) if it contains duplicate rows.
A table is in Third Normal Form (3NF) if it has no transitive dependencies.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Third Normal Form (3NF) and why is it important?
Third Normal Form (3NF) allows for duplicate data entries.
3NF is a method for data encryption in databases.
Third Normal Form (3NF) is used to increase data redundancy.
Third Normal Form (3NF) is a database normalization form that eliminates transitive dependencies.
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