SQL Types XML

SQL Types XML

This page details the SQL types and their use cases. Explore the different types to understand how they apply in various data contexts.

Type 1: String (VARCHAR) - Represents a sequence of characters. Used for storing text data.

Type 2: Number (INT, FLOAT) - Represents numerical values. Used for arithmetic operations.

Type 3: Date - Represents a date and time. Essential for data handling and chronology.

Type 4: Boolean - Represents a true or false value.

Type 5: Composite Type - Combines multiple data types (e.g., string and number).

Type 6: Array - Represents a list of values.

Type 7: Object - Represents a collection of named pairs of data types (key-value pairs).

Type 8: NULL - Represents the absence of a value.

Type 9: Unicode - Represents characters from different languages.

Example Usage

Consider a scenario where you need to store a user's email address, which is a string.

The String type is perfect for this.

Similarly, for storing dates, Date type is used.

Key Features

The SQL types provide a structured way to represent data, aiding in data management and querying.