Oracle - Numbers MCQ

Oracle – Numbers

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1. What is the primary purpose of numeric datatypes in Oracle PL/SQL?

To perform calculations with numeric values

To store date and time information

To declare variables

To store character data

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2. Which datatype in PL/SQL is used to store integer values with no decimal places?

NUMBER

VARCHAR2

BINARY_INTEGER

DATE

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3. What is the primary difference between PLS_INTEGER and BINARY_INTEGER in PL/SQL?

PLS_INTEGER is used for binary data, while BINARY_INTEGER is used for integers

BINARY_INTEGER is faster for arithmetic operations

PLS_INTEGER is used for character data

They are the same datatype with different names

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4. What is the purpose of the SIMPLE_INTEGER datatype in PL/SQL?

To store binary data

To declare variables

To perform calculations with simple numeric values

To store character data

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5. Which datatype in PL/SQL is used for floating-point numbers with single precision?

SIMPLE_FLOAT

BINARY_DOUBLE

NUMBER

BINARY_FLOAT

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6. What is the purpose of numeric subtypes in PL/SQL?

To declare variables

To simplify code

To store character data

To store numeric values with different precisions

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7. In PL/SQL, how can you convert a string to a numeric value?

By using the TO_NUMBER function

By using the TO_STRING function

By using the TO_CHAR function

By using the TO_DATE function

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8. What does the TO_CHAR function do in PL/SQL?

Converts a character string to a number

Converts a date to a character string

Converts a number to a character string

Converts a character string to a date

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9. What is the primary purpose of the CAST function in PL/SQL?

To simplify code

To store binary data

To convert between different datatypes

To perform calculations with numbers

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10. What are implicit conversions in PL/SQL?

Conversions that require an explicit CAST function

Conversions that are not allowed

Conversions that involve character data only

Conversions that occur automatically without explicit conversion functions

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11. In PL/SQL, what is the purpose of numeric operators?

To perform calculations with numeric values

To store character data

To declare variables

To convert between datatypes

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12. What is the primary purpose of rounding and truncation functions in PL/SQL?

To simplify code

To convert between different datatypes

To perform mathematical operations on numbers

To round or truncate numeric values

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13. What is the purpose of trigonometric functions in PL/SQL?

To store binary data

To perform calculations with numbers

To declare variables

To convert between datatypes

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14. What does the SIN function do in PL/SQL?

Returns the sum of numbers

Returns the absolute value of a number

Returns the sine of an angle

Returns the square root of a number

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Oracle – Numbers MCQ