MongoDB Data Types: Number

Identify Appropriate Number Types

Given a list of numeric values, decide which MongoDB number type (int, long, double, decimal128) is most appropriate for each.

Expected output: A mapping of values to MongoDB number types with explanations.

Hint: Consider the value range and whether precision is required.

Create a MongoDB Document with Mixed Number Types

Create a sample MongoDB document that uses int, long, double, and decimal128 fields appropriately.

Expected output: A valid MongoDB document JSON with correct number types.

Hint: Use NumberInt(), NumberLong(), and NumberDecimal() wrappers where needed.

MongoDB supports int (32-bit), long (64-bit), double (64-bit floating point), and decimal128 (128-bit decimal) numeric data types.

Use decimal128 when you need high precision decimal storage, such as for financial or monetary data, to avoid rounding errors.

int is a 32-bit signed integer suitable for smaller numbers, while long is a 64-bit signed integer used for larger numeric values.