SQL Data Types

About

SQL data types define the kind of values that can be stored in a database column. They are part of the SQL standard and ensure that data is stored, processed, and retrieved in a consistent way.

SQL data types are broadly categorized into:

• Numeric Types – for storing numbers (integers, decimals, etc.).

• Character Types – for storing text strings.

• Date & Time Types – for storing dates, times, and timestamps.

• Large Object Types – for storing large binary or text data like images, documents, or media files.

Understanding data types is fundamental to designing effective database schemas and ensuring data integrity.