Database Quiz

Explain the data type 'Numeric'.

• Numeric data type represents alphabets in programming.

• Numeric data type represents boolean values in programming.

• Numeric data type represents numbers in programming.

• Numeric data type represents dates in programming.

What are the disadvantages of using flat-file databases?

• Flat-file databases are easily scalable and can handle large amounts of data efficiently.

• Flat-file databases lack the ability to handle complex relationships between data, have limited scalability, can lead to data redundancy, and are prone to data inconsistency.

• Flat-file databases have built-in data validation mechanisms to ensure data accuracy.

• Flat-file databases are highly secure and cannot be easily accessed by unauthorized users.

Explain the data type 'Integer'.

• Integer data type represents only decimal numbers.

• Integer data type represents whole numbers in programming.

• Integer data type is used for storing text data.

• Integer data type allows for storing both whole and decimal numbers.

Explain the data type 'Currency'.

• Currency data type is used to represent boolean values.

• Currency data type is used to represent time values.

• Currency data type is used to represent temperature values.

• Currency data type is used to represent monetary values with a specific amount and currency code.

Explain the data type 'Decimal'.

• Decimal is a data type used for storing text data.

• Decimal is a data type used for handling boolean values.

• Decimal is a data type used to represent numbers with decimal points.

• Decimal is a data type used for representing complex numbers.

What are the disadvantages of using relational databases?

• Limited scalability, complex data structures, potential performance issues, high cost

• No performance issues

• Simple data structures

• Unlimited scalability

Explain the data type 'Alphanumeric'.

• Alphanumeric data type is used for images

• Alphanumeric data type is a type of data that can contain both letters and numbers.

• Alphanumeric data type is exclusively for special characters

• Alphanumeric data type only contains numbers

What are the advantages of using flat-file databases?

• High risk of data redundancy

• Complex data retrieval is difficult

• Advantages of using flat-file databases include simplicity, no specialized software required, and portability.

• Limited scalability

What are the advantages of using relational databases?

• Data integrity, scalability, flexibility, ease of querying

• Data security, limited storage, slow performance

Explain the data type 'Date and Time'.

• Date and Time data type is used to represent only times, not dates.

• Date and Time data type is used to represent only integers, not dates or times.

• Date and Time data type is used to represent dates and times in various formats.

• Date and Time data type is used to represent only dates, not times.